John Growdon, MD
NPI 1407846686 · Neurology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Growdon, MD is a Neurology Physician provider in Boston, MA (NPI 1407846686).
Provider details
- NPI number
- 1407846686
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 0023371 (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
20 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
176 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 | 89 | $139 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 65 | $195 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 22 | $238 |
Typical Medicare-allowed amounts for these services range $139–$238 (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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 149 | 44 |
| Donepezil Hcl | 138 | 43 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 40 | 12 |
| Memantine Hcl | 33 | — |
| Primidone | 23 | — |
| Rasagiline Mesylate | 21 | — |
| Entacapone | 19 | — |
| Propranolol Hcl | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Growdon's NPI number?
- John Growdon's National Provider Identifier (NPI) is 1407846686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Growdon's specialty?
- John Growdon is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is John Growdon located?
- John Growdon's practice location on file with NPPES is 15 Parkman St, Boston, MA 02114-3117.
- What is John Growdon's phone number?
- The practice phone number listed in the NPPES registry for John Growdon is (617) 726-1728.
- Does John Growdon accept Medicare?
- John Growdon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Growdon's NPI active?
- Yes — John Growdon's NPI (1407846686) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.