Gary Keilson, MD
NPI 1508857707 · Neurology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Keilson, MD is a Neurology Physician provider in Worcester, MA (NPI 1508857707).
Provider details
- NPI number
- 1508857707
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 74084 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
740 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 325 | $92 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 98 | $165 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Limited Study95885 | 62 | $63 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 47 | $128 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 42 | $170 |
| Injection of Chemical for Paralysis of Facial and Neck Nerve Muscles on Both Sides of Face |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 69 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 559 | 105 |
| Donepezil Hcl | 342 | 94 |
| Levetiracetam | 306 | 55 |
| Memantine Hcl | 219 | 68 |
| Pramipexole Di-Hclbrand: Pramipexole Dihydrochloride | 192 | 43 |
| Baclofen | 172 | 47 |
| Primidone | 160 | 36 |
| Pregabalin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-04
- Last updated
- 2011-05-02
Frequently asked questions
- What is Gary Keilson's NPI number?
- Gary Keilson's National Provider Identifier (NPI) is 1508857707, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Keilson's specialty?
- Gary Keilson is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Keilson located?
- Gary Keilson's practice location on file with NPPES is 123 Summer St, Worcester, MA 01608-1312.
- What is Gary Keilson's phone number?
- The practice phone number listed in the NPPES registry for Gary Keilson is (508) 368-3150.
- Does Gary Keilson accept Medicare?
- Gary Keilson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Keilson's NPI active?
- Yes — Gary Keilson's NPI (1508857707) is active in the NPPES registry as of the last update on 2011-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.