Alexander Walley, M.D.
NPI 1619935400 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Walley, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1619935400).
Provider details
- NPI number
- 1619935400
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2083A0300X (MA)
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
20 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
18 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 | 18 | $102 |
Typical Medicare-allowed amounts for these services range $102–$102 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Naloxone Hcl | 1,727 | 1,251 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 261 | 35 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 125 | 16 |
| Atorvastatin Calcium | 109 | 17 |
| Gabapentin | 85 | — |
| Amlodipine Besylate | 72 | 13 |
Practice location
Mailing address
Additional practice locations (1)
- 725 Albany StShapiro 5 & 6Boston, MA 02118-2526Phone: (617) 414-5951Fax: (617) 414-1577
Registry dates
- Enumerated
- 2006-05-02
- Last updated
- 2022-03-18
- Certified
- 2022-03-07
Frequently asked questions
- What is Alexander Walley's NPI number?
- Alexander Walley's National Provider Identifier (NPI) is 1619935400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Walley's specialty?
- Alexander Walley is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Walley located?
- Alexander Walley's practice location on file with NPPES is 801 Massachusetts Ave, Boston, MA 02118-0211.
- What is Alexander Walley's phone number?
- The practice phone number listed in the NPPES registry for Alexander Walley is (617) 414-7399.
- Does Alexander Walley accept Medicare?
- Alexander Walley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Walley's NPI active?
- Yes — Alexander Walley's NPI (1619935400) is active in the NPPES registry as of the last update on 2022-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.