Mark Clark, PA
NPI 1235115213 · Medical Physician Assistant · Greenfield, NH
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Clark, PA is a Medical Physician Assistant provider in Greenfield, NH (NPI 1235115213).
Provider details
- NPI number
- 1235115213
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 0362 (NH)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
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
465 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 | 109 | $110 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 71 | $142 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 58 | $78 |
| Automated Urinalysis Test81003 | 47 | $2 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 47 | $16 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 54 | 54 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 46 | 44 |
| Azithromycin | 22 | 22 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 22 | 21 |
| Prednisone | 19 | 18 |
| Cephalexin | 18 | 18 |
| Doxycycline Hyclate | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-21
- Last updated
- 2014-03-18
Frequently asked questions
- What is Mark Clark's NPI number?
- Mark Clark's National Provider Identifier (NPI) is 1235115213, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Clark's specialty?
- Mark Clark is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Clark located?
- Mark Clark's practice location on file with NPPES is 1 Verney Drive, Greenfield, NH 03047.
- What is Mark Clark's phone number?
- The practice phone number listed in the NPPES registry for Mark Clark is (603) 305-0628.
- Does Mark Clark accept Medicare?
- Mark Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Clark's NPI active?
- Yes — Mark Clark's NPI (1235115213) is active in the NPPES registry as of the last update on 2014-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.