Robin Massing, RPA-C
NPI 1801869284 · Physician Assistant · Williamsville, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robin Massing, RPA-C is a Physician Assistant provider in Williamsville, NY (NPI 1801869284).
Provider details
- NPI number
- 1801869284
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RPA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 008731-1 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
377 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 133 | $103 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 88 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 33 | $72 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 27 | $105 |
| Hemoglobin A1c Level83036 | 24 | $10 |
| Administration of Influenza Virus VaccineG0008 | 22 | $31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 336 | 121 |
| Rosuvastatin Calcium | 292 | 117 |
| Amlodipine Besylate | 227 | 97 |
| Fluticasone Propionate | 198 | 94 |
| Metoprolol Succinate | 191 | 77 |
| Omeprazole | 189 | 69 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 across 2 records (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
- 2006-02-08
- Last updated
- 2012-04-06
Frequently asked questions
- What is Robin Massing's NPI number?
- Robin Massing's National Provider Identifier (NPI) is 1801869284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robin Massing's specialty?
- Robin Massing is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robin Massing located?
- Robin Massing's practice location on file with NPPES is 295 Essjay Rd, Williamsville, NY 14221-8216.
- What is Robin Massing's phone number?
- The practice phone number listed in the NPPES registry for Robin Massing is (716) 630-1050.
- Does Robin Massing accept Medicare?
- Robin Massing is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robin Massing's NPI active?
- Yes — Robin Massing's NPI (1801869284) is active in the NPPES registry as of the last update on 2012-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.