Jonathan Barthelet
Internal Medicine Physician · Santa Monica, CA
Jonathan Barthelet is an internal medicine physician with a practice address in Santa Monica, California, and NPI 1811428550, issued on Mar 24, 2017. Check the license (California A161156, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonathan Barthelet
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A161156 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2121 Wilshire Blvd Ste 305, Santa Monica, CA 90403
- Phone
- (310) 264-0065
- Enumerated
- Mar 24, 2017
- Record last updated
- Nov 13, 2025
- Fax
- (310) 829-3424
- Medicare enrollment
- Enrolled (PECOS I20200615001219); may accept Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Jonathan Barthelet in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A161156Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,931 Medicare Part D claims for 441 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 65 claims were for opioids.
Most prescribed
- Atorvastatin Calcium190 claims
- Rosuvastatin Calcium100 claims
- Levothyroxine Sodium97 claims
- Gabapentin73 claims
- Amlodipine Besylate69 claims
- Eliquis54 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: $52.83
3 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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
- Westside Internal MedicineSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Barthelet among 17,696 internal medicine physician records in California
Jonathan Barthelet 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
168 internal medicine physician records list a practice address in Santa Monica
They are 168 of the 5,151 NPPES records with a practice address in Santa Monica, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Monica → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Harvey Alpern, MDSanta Monica, CA 904031235291741
- John Andrews, M.D.Santa Monica, CA 904031447262126
- Mark Biscow, MDSanta Monica, CA 904031871510354
- James Dahlgren, M.D.Santa Monica, CA 904031487852117
- Monya De, MD, MPHSanta Monica, CA 904031275726655
- Teresa Dean, M.D.Santa Monica, CA 904031255538781
- Joel Isackson, MDSanta Monica, CA 904031285640680
- Stephen Kania, M.D.Santa Monica, CA 904031851594469
Common questions
What is Jonathan Barthelet's NPI number?
Jonathan Barthelet's National Provider Identifier (NPI) is 1811428550, issued on Mar 24, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Barthelet located?
The NPPES record lists a practice address at 2121 Wilshire Blvd Ste 305, Santa Monica, CA, 90403. Phone: (310) 264-0065. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Barthelet's license?
NPPES lists California license number A161156, 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 Jonathan Barthelet prescribe under Medicare Part D?
In 2024, Jonathan Barthelet had 2,931 Medicare Part D claims for 441 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.