Jasen Tjahjadi
Family Medicine Physician · Brentwood, CA
Jasen Tjahjadi is a family medicine physician with a practice address in Brentwood, California, and NPI 1649839077, issued on Jun 10, 2019. Check the license (California A176433, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jasen Tjahjadi
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- A176433 CA
MT217899 PA
Self-reported in NPPES; status is on the state search - Practice location
- 171 Sand Creek RD Ste A, Brentwood, CA 94513
- Phone
- (717) 544-4940
- Enumerated
- Jun 10, 2019
- Record last updated
- Jun 18, 2026
- Medicare enrollment
- Enrolled (PECOS I20260317003387); may accept Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 171 Sand Creek RD Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Berg, NP, FNP-BC, ACNP-BCFamily Nurse Practitioner1316171341
Verify Jasen Tjahjadi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A176433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average family medicine physician in 2024
1,138 Medicare Part D claims for 209 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium90 claims
- Amlodipine Besylate44 claims
- Lisinopril39 claims
- Metformin Hcl38 claims
- Gabapentin34 claims
- Hydrocodone-Acetaminophen32 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.
Jasen Tjahjadi among 17,133 family medicine physician records in California
Jasen Tjahjadi is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 family medicine physician records list a practice address in Brentwood
They are 19 of the 1,212 NPPES records with a practice address in Brentwood, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Brentwood → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Krishna Bhaskarabhatla, MDBrentwood, CA 945131689621849
- Scott Bledsoe, D.O.Brentwood, CA 945131275587586
- Nilima Desai, M.D.Brentwood, CA 945131801094834
- Teginder Dhanoa, M.D.Brentwood, CA 945131801915830
- Lance Gibson, M.D.Brentwood, CA 945131962427633
- Michelle HolmesBrentwood, CA 945131720145626
- Adric Huynh, B.S.,M.S.,M.D.Brentwood, CA 945131760687107
- Derek Johnson, D.O.Brentwood, CA 945131407876063
Common questions
What is Jasen Tjahjadi's NPI number?
Jasen Tjahjadi's National Provider Identifier (NPI) is 1649839077, issued on Jun 10, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Jasen Tjahjadi located?
The NPPES record lists a practice address at 171 Sand Creek RD Ste A, Brentwood, CA, 94513. Phone: (717) 544-4940. Providers update this record themselves, so call before visiting.
How can I verify Jasen Tjahjadi's license?
NPPES lists California license number A176433, 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 Jasen Tjahjadi prescribe under Medicare Part D?
In 2024, Jasen Tjahjadi had 1,138 Medicare Part D claims for 209 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.