Brock Macdonald, M.D.
NPI 1689901506 · Gastroenterology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brock Macdonald, M.D. is a Gastroenterology Physician provider in San Francisco, CA (NPI 1689901506).
Provider details
- NPI number
- 1689901506
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A102304 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
16 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 413 | 408 |
| Omeprazole | 144 | 66 |
| Pantoprazole Sodium | 78 | 27 |
| Budesonidebrand: Budesonide Dr | 56 | 22 |
| Carvedilol | 54 | 12 |
| Mesalamine | 52 | 14 |
| Famotidine | 44 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$30 across 1 record (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
- 2009-11-13
- Last updated
- 2021-12-15
Frequently asked questions
- What is Brock Macdonald's NPI number?
- Brock Macdonald's National Provider Identifier (NPI) is 1689901506, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brock Macdonald's specialty?
- Brock Macdonald is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Brock Macdonald located?
- Brock Macdonald's practice location on file with NPPES is 350 Parnassus Ave, San Francisco, CA 94117-3608.
- What is Brock Macdonald's phone number?
- The practice phone number listed in the NPPES registry for Brock Macdonald is (415) 476-2777.
- Does Brock Macdonald accept Medicare?
- Brock Macdonald is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brock Macdonald's NPI active?
- Yes — Brock Macdonald's NPI (1689901506) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.