Thomas J. Zembal, M.D.
Pediatrics Physician · Santa Rosa, CA
Thomas J. Zembal, M.D. is a pediatrics physician with a practice address in Santa Rosa, California, and NPI 1376658716, issued on Aug 19, 2006. Check the license (California G35634, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas J. Zembal
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- G35634 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4702 Hoen Ave, Santa Rosa, CA 95405
- Phone
- (707) 545-2255
- Enumerated
- Aug 19, 2006
- Record last updated
- Jan 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (707) 545-0456
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 4702 Hoen Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adina Logan, M.D.Internal Medicine Physician1881667178
Verify Thomas J. Zembal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G35634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average pediatrics physician in 2024
15 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D.
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.
Thomas J. Zembal among 9,272 pediatrics physician records in California
Thomas J. Zembal, M.D. is one of 9,272 pediatrics physician records with a practice address in California. 31% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 56% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2015 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in California
There are 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in Santa Rosa → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Deborah Britt, M.D.Santa Rosa, CA 954051316959307
- Elizabeth Culhane, M.D.Santa Rosa, CA 954051508979923
- Leland Davis, M.D.Santa Rosa, CA 954051134152028
- Daniel Greenfield, M.D.Santa Rosa, CA 954051043203946
- Grace Martin, M.D.Santa Rosa, CA 954051356454086
- Donald Meyer, MDSanta Rosa, CA 954051194881425
- Kenneth Prosser, M.D.Santa Rosa, CA 954051770694598
- Cathryn Ross, MDSanta Rosa, CA 954051235185992
Common questions
What is Thomas J. Zembal, M.D.'s NPI number?
Thomas J. Zembal, M.D.'s National Provider Identifier (NPI) is 1376658716, issued on Aug 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas J. Zembal, M.D. located?
The NPPES record lists a practice address at 4702 Hoen Ave, Santa Rosa, CA, 95405. Phone: (707) 545-2255. Providers update this record themselves, so call before visiting.
How can I verify Thomas J. Zembal, M.D.'s license?
NPPES lists California license number G35634, 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 Thomas J. Zembal, M.D. prescribe under Medicare Part D?
In 2024, Thomas J. Zembal, M.D. had 15 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.