William Mullally, MD
NPI 1659463339 · Neurology Physician · Braintree, MA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Mullally, MD is a Neurology Physician provider in Braintree, MA (NPI 1659463339).
Provider details
- NPI number
- 1659463339
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 46261 (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
19 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
325 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 | 182 | $138 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 94 | $176 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $194 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 16 | $236 |
Typical Medicare-allowed amounts for these services range $138–$236 (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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 166 | 52 |
| Nortriptyline Hcl | 99 | 33 |
| Rizatriptan Benzoatebrand: Rizatriptan | 74 | 26 |
| Sumatriptan Succinate | 68 | 13 |
| Amitriptyline Hcl | 55 | 21 |
| Topiramate | 47 | 19 |
| Galcanezumab-Gnlmbrand: Emgality Pen | 41 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-29
- Last updated
- 2011-06-07
Frequently asked questions
- What is William Mullally's NPI number?
- William Mullally's National Provider Identifier (NPI) is 1659463339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mullally's specialty?
- William Mullally is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is William Mullally located?
- William Mullally's practice location on file with NPPES is 111 Grossman Dr, Braintree, MA 02184-4997.
- What is William Mullally's phone number?
- The practice phone number listed in the NPPES registry for William Mullally is (781) 849-2265.
- Does William Mullally accept Medicare?
- William Mullally is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Mullally's NPI active?
- Yes — William Mullally's NPI (1659463339) is active in the NPPES registry as of the last update on 2011-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.