Masami Hattori, M.D.
Pain Medicine Physician · San Francisco, CA
Masami Hattori, M.D. is a pain medicine physician with a practice address in San Francisco, California, and NPI 1306938055, issued on Sep 29, 2006. Check the license (California A61067, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Masami Hattori
- Credential
- M.D.
- Primary taxonomy
- Pain Medicine Physician 208VP0000X
- License number
- A61067 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Shrader St Ste 600, San Francisco, CA 94117
- Phone
- (415) 292-9756
- Enumerated
- Sep 29, 2006
- Record last updated
- Nov 27, 2025
- Fax
- (415) 292-3481
- Medicare enrollment
- Enrolled (PECOS I20031125000689); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pain medicine physician records → All 140 in California → Look up another NPI →
Verify Masami Hattori in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61067Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average pain medicine physician in 2024
1,966 Medicare Part D claims for 384 beneficiaries, against an average of 2,095 among the 944 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 1,026 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen351 claims
- Gabapentin175 claims
- Oxycodone Hcl154 claims
- Buprenorphine98 claims
- Buprenorphine-Naloxone91 claims
- Oxycodone-Acetaminophen77 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 MIPS final score for 2023 (Medicare payment program): 72 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: $253.65
11 payments; by number, the most common kind was food and beverage; the largest payer was Collegium Pharmaceutical, Inc. The 769 providers of this specialty with any payment received $3,397.95 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.
Masami Hattori among 140 pain medicine physician records in California
Masami Hattori, M.D. is one of 140 pain medicine physician records with a practice address in California. 75% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 57% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1995 · median 2001 among the 81 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208VP0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine Physician providers in California
There are 140 pain medicine physician records in California.
All 140 in California → Every provider in San Francisco → Pain Medicine Physician nationwide →
The 8 pain medicine physician records with the nearest ZIP codes
- Robert Bundy, MDSan Francisco, CA 941151972681575
- Charlot LeSan Francisco, CA 941091104540368
- Wieslaw Rocki, MD, PHDSan Francisco, CA 941271780976464
- Marawan Moneim, NPISunnyvale, CA 940851962378646
- Genevieve D'Souza, MDPalo Alto, CA 943041730208430
- Timothy Kelly, MD, MPHStanford, CA 943051649805888
- Albert Kwon, MDStanford, CA 943051942542923
- Abdullah Qatu, MDStanford, CA 943051922503648
Common questions
What is Masami Hattori, M.D.'s NPI number?
Masami Hattori, M.D.'s National Provider Identifier (NPI) is 1306938055, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Masami Hattori, M.D. located?
The NPPES record lists a practice address at 1 Shrader St Ste 600, San Francisco, CA, 94117. Phone: (415) 292-9756. Providers update this record themselves, so call before visiting.
How can I verify Masami Hattori, M.D.'s license?
NPPES lists California license number A61067, 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 Masami Hattori, M.D. prescribe under Medicare Part D?
In 2024, Masami Hattori, M.D. had 1,966 Medicare Part D claims for 384 beneficiaries; the average among pain medicine physician prescribers was 2,095. Part D covers Medicare prescriptions only.
What is Masami Hattori, M.D.'s MIPS final score?
The 2023 MIPS final score is 72 of 100. 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.