Masami Hattori, M.D.
NPI 1306938055 · Pain Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Masami Hattori, M.D. is a Pain Medicine Physician provider in San Francisco, CA (NPI 1306938055).
Provider details
- NPI number
- 1306938055
- Entity type
- Individual
- Primary specialty
- Pain Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A61067 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,459 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,292 | $107 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 814 | $150 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 109 | $194 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 42 | $143 |
| Injection of Trigger Points, 1-2 Muscles20552 | 30 | $57 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 351 | 125 |
| Gabapentin | 175 | 65 |
| Oxycodone Hcl | 154 | 61 |
| Buprenorphine | 98 | 38 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 91 | 43 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 77 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$254 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-29
- Last updated
- 2025-11-27
- Certified
- 2025-11-27
Frequently asked questions
- What is Masami Hattori's NPI number?
- Masami Hattori's National Provider Identifier (NPI) is 1306938055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Masami Hattori's specialty?
- Masami Hattori is listed in the NPPES registry with a primary specialty of Pain Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Masami Hattori located?
- Masami Hattori's practice location on file with NPPES is 1 Shrader St Ste 600, San Francisco, CA 94117-1018.
- What is Masami Hattori's phone number?
- The practice phone number listed in the NPPES registry for Masami Hattori is (415) 292-9756.
- Does Masami Hattori accept Medicare?
- Masami Hattori is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Masami Hattori's NPI active?
- Yes — Masami Hattori's NPI (1306938055) is active in the NPPES registry as of the last update on 2025-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.