NPPES file of Aug 9, 2026

Juancarlos Buller, MD

Sports Medicine (Family Medicine) Physician · Napa, CA

Juancarlos Buller, MD is a sports medicine (family medicine) physician with a practice address in Napa, California, and NPI 1346219557, issued on Mar 17, 2006. Check the license (California A66601, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1346219557
Name
Juancarlos Buller
Credential
MD
Primary taxonomy
Sports Medicine (Family Medicine) Physician 207QS0010X
License number
A66601 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Hartle CT, Napa, CA 94559
Phone
(707) 254-1775
Enumerated
Mar 17, 2006
Record last updated
Sep 1, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(707) 254-1779
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 300 Hartle CT

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Angel Aguilera, MDPsychiatry Physician1063806743
  2. Denisse AlemanSocial Worker1063908226
  3. Ana Barrios LopezClinical Social Worker1396362984
  4. Peta Gay Bezek, FNP-BCFamily Nurse Practitioner1396281911
  5. Heidi Biegel, CNMAdvanced Practice Midwife1558366054
  6. Jamie Bongiovi, LCSWSocial Worker1013071067

Verify Juancarlos Buller in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A66601
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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5.2 times the Medicare Part D claims of the average sports medicine (family medicine) physician in 2024

4,475 Medicare Part D claims for 340 beneficiaries, against an average of 855 among the 2,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Juancarlos Buller4,475
  2. Specialty average855

Most prescribed

  1. Atorvastatin Calcium445 claims
  2. Amlodipine Besylate245 claims
  3. Lisinopril204 claims
  4. Metformin Hcl Er202 claims
  5. Gabapentin194 claims
  6. Levothyroxine Sodium146 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.

Juancarlos Buller among 266 sports medicine (family medicine) physician records in California

Juancarlos Buller, MD is one of 266 sports medicine (family medicine) physician records with a practice address in California. 84% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 73% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2021 · 43% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS0010X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sports Medicine (Family Medicine) Physician providers in California

There are 266 sports medicine (family medicine) physician records in California.

The 8 sports medicine (family medicine) physician records with the nearest ZIP codes

  1. Sandeep Gupta, MDFremont, CA 945381215137815
  2. Carlton Covey, M.D.Travis Afb, CA 945351629265020
  3. Jordan Rennicke, MDTravis Afb, CA 945351407343767
  4. Scott Riise, M.D.Travis Afb, CA 945351770570723
  5. Derrick Miller, MDAntioch, CA 945311366022386
  6. Steven Zonner, D.O.Union City, CA 945871578736617
  7. Julia Hohman, M.D.Walnut Creek, CA 945951649327685
  8. Artemio Perez, D.O.Pleasant Hill, CA 945231821299926

Common questions

What is Juancarlos Buller, MD's NPI number?

Juancarlos Buller, MD's National Provider Identifier (NPI) is 1346219557, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Juancarlos Buller, MD located?

The NPPES record lists a practice address at 300 Hartle CT, Napa, CA, 94559. Phone: (707) 254-1775. Providers update this record themselves, so call before visiting.

How can I verify Juancarlos Buller, MD's license?

NPPES lists California license number A66601, 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 Juancarlos Buller, MD prescribe under Medicare Part D?

In 2024, Juancarlos Buller, MD had 4,475 Medicare Part D claims for 340 beneficiaries; the average among sports medicine (family medicine) physician prescribers was 855. 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.