James Guido Distefano, M.D.
Sports Medicine (Orthopaedic Surgery) Physician · Alameda, CA
James Guido Distefano, M.D. is a sports medicine (orthopaedic surgery) physician with a practice address in Alameda, California, and NPI 1942513882, issued on Jul 21, 2010. Check the license (California A103423, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Guido Distefano
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
- License number
- A103423 CA
Self-reported in NPPES; status is on the state search - Practice location
- 947 Marina Village Pkwy, Alameda, CA 94501
- Phone
- (510) 522-6637
- Enumerated
- Jul 21, 2010
- Record last updated
- Aug 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 1427081165 CA
- Medicare enrollment
- Enrolled (PECOS I20110902000315); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest sports medicine (orthopaedic surgery) physician records → All 384 in California → Look up another NPI →
Also registered at 947 Marina Village Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicholas Pirnia, MDOrthopaedic Surgery of the Spine Physician1932413713
Verify James Guido Distefano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A103423Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,157.24
20 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 2,400 providers of this specialty with any payment received $19,779.31 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
- Alameda Health SystemSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Guido Distefano among 384 sports medicine (orthopaedic surgery) physician records in California
James Guido Distefano, M.D. is one of 384 sports medicine (orthopaedic surgery) physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 29% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2006 · median 2003 among the 293 with a school on file
- Record last updated2013 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X 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 (Orthopaedic Surgery) Physician providers in California
There are 384 sports medicine (orthopaedic surgery) physician records in California.
All 384 in California → Every provider in Alameda → Sports Medicine (Orthopaedic Surgery) Physician nationwide →
The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes
- Fred Blackwell, M.D.Alameda, CA 945011386771186
- Adam Brooks, M.D.Antioch, CA 945091407167703
- Semon Bader, M.D.Concord, CA 945201750581278
- Stephen Franzino, MDFremont, CA 945361114037033
- Russell Nord, M.D.Fremont, CA 945361245436542
- Benjamin Halligan, MDFremont, CA 945381972715985
- Kerisimasi Reynolds, D.O.Fremont, CA 945381518282920
- Gregg Pottorff, M.D.Castro Valley, CA 945461477520096
Common questions
What is James Guido Distefano, M.D.'s NPI number?
James Guido Distefano, M.D.'s National Provider Identifier (NPI) is 1942513882, issued on Jul 21, 2010. An NPI identifies a provider in billing; it is not a license.
Where is James Guido Distefano, M.D. located?
The NPPES record lists a practice address at 947 Marina Village Pkwy, Alameda, CA, 94501. Phone: (510) 522-6637. Providers update this record themselves, so call before visiting.
How can I verify James Guido Distefano, M.D.'s license?
NPPES lists California license number A103423, 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.
What is James Guido Distefano, M.D.'s MIPS final score?
The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.