Michael Riordan, PA-C
NPI 1629774195 · Physician Assistant · Pittsfield, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Riordan, PA-C is a Physician Assistant provider in Pittsfield, MA (NPI 1629774195).
Provider details
- NPI number
- 1629774195
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
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 tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
223 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 69 | $100 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 61 | $145 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $78 |
| Urinalysis, Manual Test81002 | 14 | $3 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 14 | $59 |
| X-Ray of Chest, 2 Views71046 | 13 | $22 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 24 | 24 |
| Doxycycline Hyclate | 22 | 22 |
| Prednisone | 20 | 20 |
| Cephalexin | 19 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 19 | 19 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 16 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-02-06
- Last updated
- 2023-02-06
- Certified
- 2023-02-06
Frequently asked questions
- What is Michael Riordan's NPI number?
- Michael Riordan's National Provider Identifier (NPI) is 1629774195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Riordan's specialty?
- Michael Riordan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Riordan located?
- Michael Riordan's practice location on file with NPPES is 725 North St, Pittsfield, MA 01201-4109.
- What is Michael Riordan's phone number?
- The practice phone number listed in the NPPES registry for Michael Riordan is (413) 447-2000.
- Does Michael Riordan accept Medicare?
- Michael Riordan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Riordan's NPI active?
- Yes — Michael Riordan's NPI (1629774195) is active in the NPPES registry as of the last update on 2023-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.