NANCY N PHAM-THOMAS (MD) – Obstetrics & Gynecology Physician, NPI 1205099074

NANCY N PHAM-THOMAS (MD) is a healthcare provider. based in Dublin, California. specializing in OBSTETRICS/GYNECOLOGY. They hold the professional credentials MD. They hold a License No. A112865 (CA). The NPI Number for NANCY N PHAM-THOMAS (MD) is 1205099074

Main info

Female
20 Years Of Experience
Accepts Medicare Assignment
Name
NANCY N PHAM-THOMAS (MD)
NPI
1205099074
Phone
(925) 875-6546
Address
4000 DUBLIN BLVD
Enumeration Date
2 July 2008
Last Update Date
28 May 2020

Doctor Profile

Medical School Name
WAKE FOREST UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
9258756100
Graduation Year
2006 (20 years ago)
PAC ID
2062691405
Group Practice PAC ID
4284538778
Professional Enrollment ID
I20110201000112
Address ID
CA945683112DU4050XBLVD300
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience58
Completeness75
Years active:17State licenses:1Digital endpointsOther names

4,008 OBSTETRICS/GYNECOLOGY in CA

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Provider Addresses for NANCY N PHAM-THOMAS (MD)

  • 4000, Dublin Boulevard, Dublin, Alameda County, California, 9458811, United States

    DUBLIN, CA 945683113

    Phone: (925) 875-6546

    Type: Location

  • 4050 Dublin Blvd

    Dublin, CA 945683112

    Phone: (925) 875-6100

    Fax: (925) 875-6214

    Type: Location

  • Distel Circle, Los Altos, Santa Clara County, California, 94040-1432, United States

    LOS ALTOS, CA 940221408

    Phone:

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2011-02-01

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20110201000112IObstetrics/GynecologyCATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
G0101Cervical or vaginal cancer screening; pelvic and clinical breast examination1111$0
View full utilization report →

Insurance plans in this area (ZIP 94568)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4284538778View full group profile
NameSpecialtyState
A L L E R G Y/ I M M U N O L O G YCA
-CA
Obstetrics/Gynecology, HospitalistCA
O B S T E T R I C S/ G Y N E C O L O G YOR
-CA
-CA
-CA
-CA
A N E S T H E S I O L O G YCA
G A S T R O E N T E R O L O G YCA

Reviews

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Frequently asked questions

How is NANCY N PHAM-THOMAS (MD) identified in CMS data?
CMS-hosted NPPES data lists NANCY N PHAM-THOMAS (MD) with NPI 1205099074.
Does the file indicate NANCY N PHAM-THOMAS (MD) is practicing under active NPI?
Directory data currently reports NANCY N PHAM-THOMAS (MD) as active.
What is NANCY N PHAM-THOMAS (MD) best known for clinically?
Directory data describes NANCY N PHAM-THOMAS (MD) with Obstetrics & Gynecology Physician. Clinical services aligned with this taxonomy classification.
Does NANCY N PHAM-THOMAS (MD) list a practice location?
Patients near Dublin, California may find NANCY N PHAM-THOMAS (MD) in results; validate coverage separately.
Why does NANCY N PHAM-THOMAS (MD) have multiple addresses?
3 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

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