Howard L. Zeiger, M.D.
Internal Medicine Physician · Alamo, CA
Howard L. Zeiger, M.D. is an internal medicine physician with a practice address in Alamo, California, and NPI 1669497897, issued on Jul 12, 2006. Check the license (California G85109, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Howard L. Zeiger
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G85109 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1505 Saint Alphonsus Way, Alamo, CA 94507
- Phone
- (925) 837-4225
- Enumerated
- Jul 12, 2006
- Record last updated
- Jun 21, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (925) 838-5775
- Medicaid ID
- 00G851090 CA
- Medicare enrollment
- Enrolled (PECOS I20090318000724); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1505 Saint Alphonsus Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cathrien Abdelnor, MDFamily Medicine Physician1033783246
- Stephanie Byrne, MD, MPH, MBAPediatrics Physician1821550609
- Leonard Chuck, MDInternal Medicine Physician1831139385
- Paul Cortez, M.D.Pediatrics Physician1629018171
- Janet Gaston, M.D.Internal Medicine Physician1053351825
- Julie Goo, MDFamily Medicine Physician1003872961
Verify Howard L. Zeiger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G85109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,086 Medicare Part D claims for 625 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 27 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium781 claims
- Atorvastatin Calcium463 claims
- Amlodipine Besylate430 claims
- Levothyroxine Sodium378 claims
- Pantoprazole Sodium304 claims
- Lisinopril257 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: $139.03
5 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- John Muir Physician NetworkAlamo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Howard L. Zeiger among 17,696 internal medicine physician records in California
Howard L. Zeiger, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 internal medicine physician records list a practice address in Alamo
They are 8 of the 114 NPPES records with a practice address in Alamo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Alamo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leonard Chuck, MDAlamo, CA 945071831139385
- Janet Gaston, M.D.Alamo, CA 945071053351825
- Manisha Malhotra, M.D.Alamo, CA 945071780614065
- Donald Nielsen, MDAlamo, CA 945071992686075
- Nhu Pham, M.D.Alamo, CA 945071396776977
- Edward Shin, M.D.Alamo, CA 945071851666341
- James Woods, M.D.Alamo, CA 945071750315016
- Christine Chang, M.D.Danville, CA 945061770696056
Common questions
What is Howard L. Zeiger, M.D.'s NPI number?
Howard L. Zeiger, M.D.'s National Provider Identifier (NPI) is 1669497897, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Howard L. Zeiger, M.D. located?
The NPPES record lists a practice address at 1505 Saint Alphonsus Way, Alamo, CA, 94507. Phone: (925) 837-4225. Providers update this record themselves, so call before visiting.
How can I verify Howard L. Zeiger, M.D.'s license?
NPPES lists California license number G85109, 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 Howard L. Zeiger, M.D. prescribe under Medicare Part D?
In 2024, Howard L. Zeiger, M.D. had 7,086 Medicare Part D claims for 625 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.