David Z. Tzeng, M.D.
Critical Care Medicine (Internal Medicine) Physician · Sacramento, CA
David Z. Tzeng, M.D. is a critical care medicine (internal medicine) physician with a practice address in Sacramento, California, and NPI 1780660324, issued on Dec 15, 2005. Check the license (California A81243, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Z. Tzeng
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A81243 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2825 J St, Sacramento, CA 95816
- Phone
- (916) 734-0779
- Enumerated
- Dec 15, 2005
- Record last updated
- Dec 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040625000998); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 2825 J St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alene Antelman-Aldrich, PAPhysician Assistant1750328951
- Brigitte Berry, M.D.Internal Medicine Physician1477741973
- Wendy CarmicklePhysical Therapist1093026817
- Jennifer Draper, M.D.Internal Medicine Physician1609926526
- Gregory Fields, PHDClinical Psychologist1902852783
- Tessa Gaynor, RD, CNSCPediatric Nutrition Registered Dietitian1962632604
Verify David Z. Tzeng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% more Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
787 Medicare Part D claims for 167 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Breyna85 claims
- Breztri Aerosphere79 claims
- Albuterol Sulfate Hfa71 claims
- Alvesco55 claims
- Stiolto Respimat49 claims
- Fluticasone Propionate47 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.
Bills Medicare through one group practice
- Permanente Medical Group IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Z. Tzeng among 723 critical care medicine (internal medicine) physician records in California
David Z. Tzeng, M.D. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2001 · median 2005 among the 559 with a school on file
- Record last updated2021 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Sacramento → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Muhammad Afzal, M.D.Sacramento, CA 958161689600553
- Imran Aurangzeb, M.D.Sacramento, CA 958161831127570
- Richard Defelice, M.D.Sacramento, CA 958161063458495
- Kapil Dhawan, M.D.Sacramento, CA 958161558385997
- Darshan DhinganiSacramento, CA 958161053547968
- Nathaniel Gordon, MDSacramento, CA 958161063731966
- Saman Hayatdavoudi, M.D.Sacramento, CA 958161093912958
- Daniel Ikeda, M.D.Sacramento, CA 958161730124520
Common questions
What is David Z. Tzeng, M.D.'s NPI number?
David Z. Tzeng, M.D.'s National Provider Identifier (NPI) is 1780660324, issued on Dec 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Z. Tzeng, M.D. located?
The NPPES record lists a practice address at 2825 J St, Sacramento, CA, 95816. Phone: (916) 734-0779. Providers update this record themselves, so call before visiting.
How can I verify David Z. Tzeng, M.D.'s license?
NPPES lists California license number A81243, 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 David Z. Tzeng, M.D. prescribe under Medicare Part D?
In 2024, David Z. Tzeng, M.D. had 787 Medicare Part D claims for 167 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.