1. Home
  2. Directory
  3. California
  4. San Mateo
  5. Psychiatry Neurology
  6. NPI Profile

ESTELLE GREGORY MD
NPI 1669665949
Psychiatry & Neurology - Psychiatry in San Mateo, CA

Active since August 21, 2007Opted out of Medicare · through Dec 8, 2027
498 FATHOM DR, SAN MATEO, CA 94404(650) 212-2148 Get Directions Write a Review

NPPES record last updated: December 8, 2015. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Estelle Gregory Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ESTELLE GREGORY MD (NPI 1669665949) is an individual psychiatry provider in San Mateo, California, licensed in California (G66331) and active in the NPI registry since August 2007. She has opted out of Medicare through December 8, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1669665949
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameESTELLE GREGORYCredential: MD
Location Address498 FATHOM DRSan Mateo, CA 94404-1004
Mailing Address498 Fathom DrSan Mateo, CA 94404-1004 · (650) 212-2148
Phone(650) 212-2148
Sole ProprietorYes
Enumeration DateAugust 21, 2007
Last NPPES UpdateDecember 8, 2015
✔ NPI 1669665949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · G66331
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
498 FATHOM DR, San Mateo, CA 94404
Open in Google Maps ↗

Other Identifiers 1

Medicare UPIN00G663310CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Estelle Gregory Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from December 8, 2015 through December 8, 2027.

Opt-Out Effective DateDecember 8, 2015
Opt-Out In Effect ThroughDecember 8, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94404 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$202.35 typical visit price
range $69.00 – $202.35
Typical copayment $50.58 (range $17.25 – $50.58)
Most-billed visit code 99205
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Estelle Gregory's NPI number?

The NPI number for Estelle Gregory is 1669665949. It was assigned to this individual provider in the NPPES registry on August 21, 2007.

Where is Estelle Gregory located?

Estelle Gregory practices at 498 Fathom Dr, San Mateo, CA 94404. The listed phone number is (650) 212-2148.

What is Estelle Gregory's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Estelle Gregory enrolled in Medicare?

No. Estelle Gregory has opted out of Medicare through December 8, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Estelle Gregory was last updated on December 8, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.