Gerald Katz, M.D.
NPI 1306868450 · Obstetrics & Gynecology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerald Katz, M.D. is a Obstetrics & Gynecology Physician provider in Walnut Creek, CA (NPI 1306868450).
Provider details
- NPI number
- 1306868450
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G75401 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
333 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 97 | $109 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 64 | $57 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 63 | $47 |
| Stool Analysis for Blood to Screen for Colon Tumors82270 | 54 | $4 |
| Smear for Infectious Agents87210 | 17 | $6 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 123 | 43 |
| Raloxifene Hcl | 20 | — |
| Medroxyprogesterone Acetate | 15 | — |
| Estradiolbrand: Estradiol (twice Weekly) | 13 | — |
| Clobetasol Propionate | 12 | — |
| Hydrocortisone | 12 | — |
| Estradiolbrand: Dotti | 11 | — |
| Estradiolbrand: Imvexxy |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$400 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-24
- Last updated
- 2025-02-11
- Certified
- 2025-02-11
Frequently asked questions
- What is Gerald Katz's NPI number?
- Gerald Katz's National Provider Identifier (NPI) is 1306868450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Katz's specialty?
- Gerald Katz is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald Katz located?
- Gerald Katz's practice location on file with NPPES is 112 La Casa Via Ste 200, Walnut Creek, CA 94598-3011.
- What is Gerald Katz's phone number?
- The practice phone number listed in the NPPES registry for Gerald Katz is (925) 933-4747.
- Does Gerald Katz accept Medicare?
- Gerald Katz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerald Katz's NPI active?
- Yes — Gerald Katz's NPI (1306868450) is active in the NPPES registry as of the last update on 2025-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.