Zachary Fellows, M.D.
Obesity Medicine (Internal Medicine) Physician · Carlsbad, CA
Zachary Fellows, M.D. is an obesity medicine (internal medicine) physician with a practice address in Carlsbad, California, and NPI 1154733152, issued on May 24, 2014. Check the license (California A144510, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Zachary Fellows
- Credential
- M.D.
- Primary taxonomy
- Obesity Medicine (Internal Medicine) Physician 207RB0002X
- License number
- A144510 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6120 Paseo Del Norte Ste L2, Carlsbad, CA 92011
- Phone
- (760) 891-4687
- Enumerated
- May 24, 2014
- Entity
- Type 1 · individual
Also registered at 6120 Paseo Del Norte Ste L2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jamie Adair, RNRegistered Nurse1457237836
Verify Zachary Fellows in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A144510Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
32% fewer Medicare Part D claims than the average obesity medicine (internal medicine) physician in 2024
699 Medicare Part D claims for 219 beneficiaries, against an average of 1,026 among the 117 providers of this specialty who prescribed in Part D. 57 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate90 claims
- Prednisone78 claims
- Methotrexate49 claims
- Gabapentin38 claims
- Duloxetine Hcl36 claims
- Meloxicam26 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.
The Medicare quality score for 2023: 80.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $3,553.31
68 payments, mostly food and beverage; the largest payer was Kyowa Kirin, Inc.. The 88 providers of this specialty with any payment received $5,219.30 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.
Obesity Medicine (Internal Medicine) Physician providers in California
There are 23 obesity medicine (internal medicine) physician records in California.
Other obesity medicine (internal medicine) physician records in California
- Arthur Aronson, M.D.San Diego, CA1780030122
- Mohammed Bailony, M.D.San Mateo, CA1801114111
- Jagraj Basi, MDStockton, CA1619516531
- Jill Blickley, DOSan Francisco, CA1730126152
- Randall Cornateanu, M.D.Placentia, CA1043606429
- Quyen Dao, M.D.Tustin, CA1932305034
- Nolan Desa, MDLong Beach, CA1245673896
- Nicole Grant, MDPalo Alto, CA1902007198
- Eduardo Grunvald, M.DSan Diego, CA1497791339
- Ed Hendricks, M.D.Roseville, CA1700220092
Common questions
What is Zachary Fellows, M.D.'s NPI number?
Zachary Fellows, M.D.'s National Provider Identifier (NPI) is 1154733152, issued on May 24, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Fellows, M.D. located?
The NPPES record lists a practice address at 6120 Paseo Del Norte Ste L2, Carlsbad, CA, 92011. Phone: (760) 891-4687. Providers update this record themselves, so call before visiting.
How can I verify Zachary Fellows, M.D.'s license?
NPPES lists California license number A144510, 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 Zachary Fellows, M.D. prescribe under Medicare Part D?
In 2024, Zachary Fellows, M.D. had 699 Medicare Part D claims for 219 beneficiaries; the average among obesity medicine (internal medicine) physician prescribers was 1,026. Part D covers Medicare prescriptions only.
What is Zachary Fellows, M.D.'s Medicare quality score?
The 2023 MIPS final score is 80.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.