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Limited public information available

This provider is listed in NPPES, but additional records were not identified in the sources currently connected. Additional information may be available directly from official licensing authorities.

GREGORY MACCHIO, M.D.

PhysicianM.D.Physician (MD/DO)

MISSION VIEJO, CANPI · 1386621100Verified via NPPES

State verification availableSave

Source: NPPES NPI Registry

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Educational answers with the public sources they came from. Phoenix never diagnoses and never recommends one provider or hospital over another.

Identity & practice

Legal name
GREGORY MACCHIO, M.D.
Profession
Physician
NPI
1386621100
Primary specialty
Physician (MD/DO)
Taxonomy code
207L00000X
Practice status
Not on record
Credentials
M.D.
Practice address
27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Provider Intelligence

Everything public we can show about GREGORY MACCHIO, M.D.

3 of 15 public-record dimensions are populated from connected sources. Where a dataset is not connected yet, Phoenix links you straight to the official lookup instead of guessing. Nothing here ranks or endorses a provider.

State licenses

Every state licence Phoenix has located for this provider, current or historical.

Verify at the official source

Check the state board

Licence status changes between refreshes. The issuing board is always the authoritative record.

Check State medical & professional boards

Board certifications

Specialty certification reported by a recognised certifying board.

Verify at the official source

Look up on ABMS

Certification is a training and examination credential. It does not describe an individual patient outcome.

Check ABMS Certification Matters

Education

Professional school and degree records located in connected public sources.

Verify at the official source

Not yet ingested

Education is published inconsistently across states. Absence here does not mean absence of training.

Check State board profiles & NPPES

Residency & fellowship

Postgraduate training programmes reported in public records.

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Not yet ingested

Training history is self-reported to boards and directories, and is not audited by Phoenix.

Check State board profiles & hospital directories

Hospital affiliations

Facilities publicly connected to this provider through directories or address overlap.

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Confirm with the practice

An affiliation means a public record links the provider to the facility. It does not guarantee admitting privileges today.

Check CMS Hospital Compare · NPPES

Practice locations

Addresses where the provider is publicly listed as practising.

Public records available

1 location

  • 27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426 · Primary practice address (NPPES)9493641400Source record

Registry addresses lag reality. Always confirm the location before travelling to an appointment.

Verify at NPPES NPI Registry

Public disciplinary actions

Publicly posted board or government actions matched to this provider.

Verify at the official source

Search the state board

Phoenix reports that a record exists. It never interprets severity, intent, or current standing — read the original filing.

Check State boards · FSMB DocInfo

NPI details

The federal identity record every U.S. provider must maintain.

Public records available

NPI 1386621100

  • Legal name · GREGORY MACCHIO, M.D.
  • Credentials · M.D.
  • Primary taxonomy · Physician (MD/DO)207L00000X

NPPES is self-maintained by the provider, so contact details can be out of date.

Verify at NPPES NPI Registry (CMS)

CMS participation

Whether the provider is enrolled in Medicare and accepting assignment.

Verify at the official source

Look up on Medicare Care Compare

Medicare enrolment and assignment status are published by CMS and change frequently. Confirm before booking.

Check Medicare Care Compare (CMS)

OIG exclusion status

Whether the provider appears on the federal list of excluded individuals.

Verify at the official source

Search the OIG LEIE

Exclusion lists are name-based and can return similar names. Confirm identity fields before drawing a conclusion.

Check HHS OIG · List of Excluded Individuals/Entities

Open Payments

Payments and transfers of value reported by drug and device manufacturers.

Verify at the official source

Search Open Payments

A reported payment is not evidence of wrongdoing. Research funding, meals, and royalties are all reported together.

Check CMS Open Payments

Years in practice

Time since the earliest licensing or practice record Phoenix can see.

Verify at the official source

No dated record yet

This is a floor, not a career total — earlier practice may exist without a public dated record. Experience is not a quality measure.

Check Derived from dated public records

Languages

Languages spoken in the practice.

Verify at the official source

Ask the practice directly

Language capability is rarely published in a reliable public dataset, so Phoenix will not guess it.

Check Practice / health plan directory

Accepted insurance

Plans and networks the provider participates in.

Verify at the official source

Confirm with your plan

Network participation changes mid-year and varies by plan and location. Your insurer's directory is the only reliable source.

Check Your health plan's provider directory

Procedure & specialty intelligence

What the specialty and taxonomy records say this provider is trained to do.

Public records available

1 specialty record

  • Physician (MD/DO) · Primary specialty (NPPES taxonomy)207L00000XSource record

Specialty codes describe scope of training, not procedure volume, outcomes, or suitability for your situation.

Verify at NPPES taxonomy · certifying boards

Practice Locations & Affiliations

Compiled from NPPES, CMS PECOS, and hospital directories
DHP OF MISSION MEDICAL GROUP INC

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Taxonomy compatible + Same city

ADVANCED HOSPITALIST MEDICAL GROUP, INC.

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Taxonomy compatible + Same city

EMERGENCY & ACUTE CARE MEDICAL CORPORATION

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Taxonomy compatible + Same city

WESTERN ANESTHESIA MEDICAL ASSOCIATES INC

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Taxonomy compatible + Same city

MISSION HOSPITAL REGIONAL MEDICAL CENTER

General Acute Care Hospital

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Same city

MISSION PATHOLOGY MEDICAL ASSOCIATES

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Same city

MISSION HOSPITAL

General Acute Care Hospital

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Same city

NAVID B JAHED, A MEDICAL CORPORATION

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493641400

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Phone match + Address match + Same city

RYAN B TRAN MD INC

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9495290939

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Taxonomy compatible + Same city

MISSION VIEJO EMERGENCY MEDICAL ASSOCIATES

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 8444744019

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Taxonomy compatible + Same city

HUAN C GUU MD A PROFESSIONAL CORPORATION

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9495008589

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Taxonomy compatible + Same city

PACIFIC HOSPITALIST ASSOCIATES A MEDICAL CORPORATION

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9495744692

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Taxonomy compatible + Same city

JAMES A. CUSHING, A PROFESSIONAL CORPORATION

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9492152653

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Same city

SYNERGY MEDICAL SPECIALISTS, P.C.

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9496122727

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Same city

PAVLO ISAK PSC

Healthcare Organization

27700 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9493572897

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Same city

CHILDREN'S HOSPITAL AT MISSION

General Acute Care Hospital

27700 MEDICAL CENTER RD FL 5 · MISSION VIEJO, CA, 926916426

Phone · 7149973000

high confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Same city

LABORATORY CORPORATION OF AMERICA

Healthcare Organization

26800 CROWN VALLEY PKWY STE 220 · MISSION VIEJO, CA, 926918038

Phone · 9493641400

medium confidence

Sources: CMS Hospital Compare · NPPES · Phone match + Same city

MARVIN D POSNER M D AND VIVIEN L PAN M D A MEDICAL CORPORATION

Healthcare Organization

27800 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916410

Phone · 9493641400

medium confidence

Sources: CMS Hospital Compare · NPPES · Phone match + Address match + Same city

ERIK J GEIGER MD INC.

Healthcare Organization

31872 COAST HWY · LAGUNA BEACH, CA, 926516773

Phone · 9493641400

medium confidence

Sources: CMS Hospital Compare · NPPES · Phone match

MISSION HOSPITAL REGIONAL MEDICAL CENTER

Healthcare Organization

31872 COAST HWY · LAGUNA BEACH, CA, 926516773

Phone · 9493641400

medium confidence

Sources: CMS Hospital Compare · NPPES · Phone match

MISSION VIEJO RADIATION ONCOLOGY CORP.

Healthcare Organization

27799 MEDICAL CENTER RD · MISSION VIEJO, CA, 926916426

Phone · 9495739560

medium confidence

Sources: CMS Hospital Compare · NPPES · ZIP match + Address match + Same city

Practice information is compiled from verified public datasets (NPPES, CMS PECOS, hospital directories, and state licensing records). Public records may vary by source and update schedule.

Phoenix Insight™

Why Practice Location Matters

Where care happens affects travel, scheduling, caregiver support, and follow-up visits.

Educational information only — not medical advice, and not a rating or endorsement of any provider.

Contact

9493641400

Verify current contact info directly with the practice.

Verified Public Information

A summary of how many verified public datasets currently contain information for this provider. This is a coverage indicator only — it is not a quality rating and does not evaluate care.

0Verified Public Data Sources Connected

Additional public datasets are still being checked and may become available over time.

Category coverage

  • Current Licenses

    Not Yet Queried · State Medical Boards

  • Historical Licenses

    Not Yet Queried · State Medical Boards

  • Practice History

    Checked — No Public Record Identified · NPPES / CMS PECOS

  • Hospital Affiliations

    Not Yet Queried · CMS Hospital Data

  • Board Certifications

    Not Yet Queried · ABMS Public Lookup

  • Medical Board Records

    Not Yet Queried · State Medical Boards

  • Quality Data

    Not Yet Queried · CMS Care Compare

  • Verified Public Sources

    Checked — No Public Record Identified · NPPES · CMS · State Boards

Missing data is not proof of absence. "Not identified in currently connected public sources." simply means Phoenix Health Compass did not find a record in the datasets currently connected for this category — additional public sources may show more.

Phoenix Verification Panel

What was checked, where it came from, and what remains unconfirmed. Verification is a record match — it is not a rating, ranking, or endorsement.

“No matching record found” means the source was queried and returned nothing for this search — it does not prove that no record exists anywhere.

How Phoenix verifies information →

Professional Verification

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Phoenix Insight™

Where Phoenix Gets Its Information

Phoenix Health Compass builds profiles from official government and licensing sources, and links to every one of them.

Educational information only — not medical advice, and not a rating or endorsement of any provider.

Phoenix Intelligence

Where to go next

Related resources across the Phoenix ecosystem — suggestions, not instructions. Phoenix never tells you what care to choose.

Nothing you have researched or saved is sent to Phoenix Navigator automatically. One account, two platforms — transfers always require your explicit approval.

Research here. Navigate what comes next.

Phoenix Health Compass helps you research providers, verify public information, compare options, and prepare for healthcare decisions.

Phoenix Navigator supports the next part of the journey with educational tools for hospital stays, discharge, recovery, caregiving, rehabilitation, sepsis recovery, limb loss, and life after care.

Nothing you have researched or saved is sent to Phoenix Navigator automatically. If you ever choose to transfer Health Binder™ content, Phoenix will show you exactly what would be shared and ask you to approve it first.

Educational reference only. Information on this profile is aggregated from public sources for research and preparation. It is not an endorsement, rating, or recommendation, and it is not a substitute for professional medical advice, diagnosis, or treatment.