Marissa Boeck, M.D.
NPI 1003108531 · Surgical Critical Care Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Boeck, M.D. is a Surgical Critical Care Physician provider in San Francisco, CA (NPI 1003108531).
Provider details
- NPI number
- 1003108531
- Entity type
- Individual
- Primary specialty
- Surgical Critical Care PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A154281 (CA)
Specialties & taxonomies
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
15 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
90 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 47 | $233 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 31 | $88 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 12 | $145 |
Typical Medicare-allowed amounts for these services range $88–$233 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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)
- 177 Fort Washington AveMhb-7gs-313New York, NY 10032-3733Phone: (212) 305-2500
Registry dates
- Enumerated
- 2011-05-02
- Last updated
- 2020-09-22
- Certified
- 2020-09-22
Frequently asked questions
- What is Marissa Boeck's NPI number?
- Marissa Boeck's National Provider Identifier (NPI) is 1003108531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Boeck's specialty?
- Marissa Boeck is listed in the NPPES registry with a primary specialty of Surgical Critical Care Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Boeck located?
- Marissa Boeck's practice location on file with NPPES is 400 Parnassus Ave, San Francisco, CA 94143-2202.
- What is Marissa Boeck's phone number?
- The practice phone number listed in the NPPES registry for Marissa Boeck is (415) 353-2161.
- Does Marissa Boeck accept Medicare?
- Marissa Boeck is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Boeck's NPI active?
- Yes — Marissa Boeck's NPI (1003108531) is active in the NPPES registry as of the last update on 2020-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.