Danielle A. Hammerman, MD
Obstetrics & Gynecology Physician · San Diego, CA
Danielle A. Hammerman, MD is an obstetrics & gynecology physician with a practice address in San Diego, California, and NPI 1770631632, issued on Jan 8, 2007. Check the license (California G79754, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Danielle A. Hammerman
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G79754 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4647 Zion Ave, San Diego, CA 92120
- Phone
- (619) 528-5000
- Enumerated
- Jan 8, 2007
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 4647 Zion Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Linda Adams, PAPhysician Assistant1427174689
- Mette-Margrethe Adkisson, M.D.Emergency Medicine Physician1528288081
Verify Danielle A. Hammerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79754Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
228 Medicare Part D claims for 60 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Estradiol71 claims
- Climara34 claims
- Progesterone23 claims
- Medroxyprogesterone Acetate21 claims
- Estring18 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.
Danielle A. Hammerman among 5,088 obstetrics & gynecology physician records in California
Danielle A. Hammerman, MD 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 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 38% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2021 · 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).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Diego → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Kaivon Arfaa, MDSan Diego, CA 921201912977463
- Bruce Bekkar, MDSan Diego, CA 921201619044583
- Richard Block, MDSan Diego, CA 921201770631673
- Silverio Chavez, MDSan Diego, CA 921201326107939
- Michael Erickson, MDSan Diego, CA 921201932257896
- Robert Hajosy, MDSan Diego, CA 921201689741514
- John KennedySan Diego, CA 921201992761654
- Karen Mehalek, MDSan Diego, CA 921201205903150
Common questions
What is Danielle A. Hammerman, MD's NPI number?
Danielle A. Hammerman, MD's National Provider Identifier (NPI) is 1770631632, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Danielle A. Hammerman, MD located?
The NPPES record lists a practice address at 4647 Zion Ave, San Diego, CA, 92120. Phone: (619) 528-5000. Providers update this record themselves, so call before visiting.
How can I verify Danielle A. Hammerman, MD's license?
NPPES lists California license number G79754, 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 Danielle A. Hammerman, MD prescribe under Medicare Part D?
In 2024, Danielle A. Hammerman, MD had 228 Medicare Part D claims for 60 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.