Gerald Frank Katz, M.D.
Obstetrics & Gynecology Physician · Walnut Creek, CA
Gerald Frank Katz, M.D. is an obstetrics & gynecology physician with a practice address in Walnut Creek, California, and NPI 1306868450, issued on Jul 24, 2006. Check the license (California G75401, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gerald Frank Katz
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G75401 CA
Self-reported in NPPES; status is on the state search - Practice location
- 112 LA Casa Via Ste 200, Walnut Creek, CA 94598
- Phone
- (925) 933-4747
- Enumerated
- Jul 24, 2006
- Record last updated
- Feb 11, 2025
- Fax
- (925) 933-1638
- Medicare enrollment
- Enrolled (PECOS I20090223000137); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 112 LA Casa Via Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Cruz, NPNurse Practitioner1740783778
- Vincent Dimaggio, M.D.Specialist1215959366
- Patricia Geraghty, N.P.Women's Health Nurse Practitioner1316067952
- Nadine Hanna, M.D.Obstetrics & Gynecology Physician1043244007
- Luman Hughes, M.D.Obstetrics & Gynecology Physician1124040274
- Judith Jones, N.P.Women's Health Nurse Practitioner1346361060
Verify Gerald Frank Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G75401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
335 Medicare Part D claims for 92 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Estradiol123 claims
- Raloxifene Hcl20 claims
- Medroxyprogesterone Acetate15 claims
- Estradiol (Twice Weekly)13 claims
- Clobetasol Propionate12 claims
- Hydrocortisone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $400.12
18 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bass Medical GroupWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerald Frank Katz among 5,088 obstetrics & gynecology physician records in California
Gerald Frank Katz, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1989 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 obstetrics & gynecology physician records list a practice address in Walnut Creek
They are 56 of the 6,170 NPPES records with a practice address in Walnut Creek, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Walnut Creek → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rosemary DelgadoWalnut Creek, CA 945981235140500
- Anh Do, MDWalnut Creek, CA 945981548362122
- Tanees Edraki, MDWalnut Creek, CA 945981881644482
- Yaron Friedman, M.D.Walnut Creek, CA 945981730104704
- Nadine Hanna, M.D.Walnut Creek, CA 945981043244007
- Luman Hughes, M.D.Walnut Creek, CA 945981124040274
- Sari Kasper, D.O.Walnut Creek, CA 945981194739110
- Mindy Plotkin, MDWalnut Creek, CA 945981588742050
Common questions
What is Gerald Frank Katz, M.D.'s NPI number?
Gerald Frank Katz, M.D.'s National Provider Identifier (NPI) is 1306868450, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Frank Katz, M.D. located?
The NPPES record lists a practice address at 112 LA Casa Via Ste 200, Walnut Creek, CA, 94598. Phone: (925) 933-4747. Providers update this record themselves, so call before visiting.
How can I verify Gerald Frank Katz, M.D.'s license?
NPPES lists California license number G75401, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gerald Frank Katz, M.D. prescribe under Medicare Part D?
In 2024, Gerald Frank Katz, M.D. had 335 Medicare Part D claims for 92 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.