Bryan Walker, M.D.
NPI 1457883621 · Family Medicine Physician · Portland, ME
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bryan Walker, M.D. is a Family Medicine Physician provider in Portland, ME (NPI 1457883621).
Provider details
- NPI number
- 1457883621
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 282352 (MA)
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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,252 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 490 | $138 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 337 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 91 | $96 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 76 | $142 |
| Hemoglobin A1c Level83036 | 56 | $10 |
| Insertion of Needle Into Vein for Collection of Blood Sample |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 205 | 51 |
| Omeprazole | 117 | 30 |
| Amlodipine Besylate | 93 | 28 |
| Gabapentin | 80 | 23 |
| Lisinopril | 79 | 22 |
| Losartan Potassium | 61 | 16 |
| Semaglutide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-28
- Last updated
- 2020-07-01
- Certified
- 2020-07-01
Frequently asked questions
- What is Bryan Walker's NPI number?
- Bryan Walker's National Provider Identifier (NPI) is 1457883621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bryan Walker's specialty?
- Bryan Walker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Bryan Walker located?
- Bryan Walker's practice location on file with NPPES is 22 Bramhall St, Portland, ME 04102-3134.
- What is Bryan Walker's phone number?
- The practice phone number listed in the NPPES registry for Bryan Walker is (207) 662-0111.
- Does Bryan Walker accept Medicare?
- Bryan Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bryan Walker's NPI active?
- Yes — Bryan Walker's NPI (1457883621) is active in the NPPES registry as of the last update on 2020-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.