Michael Brook, MD
NPI 1255361838 · Anesthesiology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Brook, MD is a Anesthesiology Physician provider in San Francisco, CA (NPI 1255361838).
Provider details
- NPI number
- 1255361838
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G63429 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
118 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Destruction of Lower Or Sacral Spinal Facet Joint Nerves Using Imaging Guidance, Single Facet Joint64635 | 35 | $187 |
| Destruction of Lower Or Sacral Spinal Facet Joint Nerves Using Imaging Guidance, Each Additional Facet Joint64636 | 34 | $56 |
| Injection of Lower Or Sacral Spine Facet Joint Using Imaging Guidance, Single Level64493 | 17 | $130 |
| Injection of Lower Or Sacral Spine Facet Joint Using Imaging Guidance, Second Level64494 | 17 | $72 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 15 | $126 |
Typical Medicare-allowed amounts for these services range $56–$187 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 470 Greenfield AveSuite 303Hanford, CA 93230-3576Phone: (559) 537-0325Fax: (559) 537-0327
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2025-06-03
- Certified
- 2025-06-03
Frequently asked questions
- What is Michael Brook's NPI number?
- Michael Brook's National Provider Identifier (NPI) is 1255361838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Brook's specialty?
- Michael Brook is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Brook located?
- Michael Brook's practice location on file with NPPES is 521 Parnassus Ave Fl 4, San Francisco, CA 94143-2206.
- What is Michael Brook's phone number?
- The practice phone number listed in the NPPES registry for Michael Brook is (415) 476-9035.
- Does Michael Brook accept Medicare?
- Michael Brook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Brook's NPI active?
- Yes — Michael Brook's NPI (1255361838) is active in the NPPES registry as of the last update on 2025-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.