Grant Finlayson, MD
NPI 1821592965 · Anesthesiology Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Finlayson, MD is a Anesthesiology Physician provider in Grand Rapids, MI (NPI 1821592965).
Provider details
- NPI number
- 1821592965
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301506408 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 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
33 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 22 | $94 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $66 |
Typical Medicare-allowed amounts for these services range $66–$94 (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)
- 3333 Evergreen Dr NeGrand Rapids, MI 49525-9493Phone: (616) 364-4200Fax: (616) 364-7347
Registry dates
- Enumerated
- 2018-03-22
- Last updated
- 2022-08-12
- Certified
- 2022-08-12
Frequently asked questions
- What is Grant Finlayson's NPI number?
- Grant Finlayson's National Provider Identifier (NPI) is 1821592965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Finlayson's specialty?
- Grant Finlayson is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Grant Finlayson located?
- Grant Finlayson's practice location on file with NPPES is 100 Michigan St Ne, Grand Rapids, MI 49503-2560.
- What is Grant Finlayson's phone number?
- The practice phone number listed in the NPPES registry for Grant Finlayson is (616) 364-4200.
- Does Grant Finlayson accept Medicare?
- Grant Finlayson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Finlayson's NPI active?
- Yes — Grant Finlayson's NPI (1821592965) is active in the NPPES registry as of the last update on 2022-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.