Mary Isom, PA-C
NPI 1336599083 · Physician Assistant · Wahpeton, ND
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Isom, PA-C is a Physician Assistant provider in Wahpeton, ND (NPI 1336599083).
Provider details
- NPI number
- 1336599083
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- 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
10 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
807 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 262 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 101 | $84 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 85 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 76 | $13 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 39 | $13 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 212 | 66 |
| Metformin Hcl | 123 | 27 |
| Lisinopril | 118 | 32 |
| Levothyroxine Sodium | 113 | 26 |
| Gabapentin | 104 | 29 |
| Losartan Potassium | 101 | 28 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-14
- Last updated
- 2016-06-14
Frequently asked questions
- What is Mary Isom's NPI number?
- Mary Isom's National Provider Identifier (NPI) is 1336599083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Isom's specialty?
- Mary Isom is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Isom located?
- Mary Isom's practice location on file with NPPES is 332 2nd Ave N, Wahpeton, ND 58075-4528.
- What is Mary Isom's phone number?
- The practice phone number listed in the NPPES registry for Mary Isom is (701) 642-7000.
- Does Mary Isom accept Medicare?
- Mary Isom is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Isom's NPI active?
- Yes — Mary Isom's NPI (1336599083) is active in the NPPES registry as of the last update on 2016-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.