Gwenn Leatherman
NPI 1164875654 · Family Nurse Practitioner · Hagerstown, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwenn Leatherman is a Family Nurse Practitioner provider in Hagerstown, MD (NPI 1164875654).
Provider details
- NPI number
- 1164875654
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- R185941 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 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
510 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 | 278 | $108 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 145 | $76 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 53 | $108 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 20 | $136 |
| Transitional Care Management Services for Problem of High Complexity99496 | 14 | $236 |
Typical Medicare-allowed amounts for these services range $76–$236 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 93 | 40 |
| Levothyroxine Sodium | 91 | 32 |
| Atorvastatin Calcium | 87 | 41 |
| Simvastatin | 86 | 19 |
| Lisinopril | 85 | 30 |
| Gabapentin | 78 | 27 |
| Famotidine | 65 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$176 across 7 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
- 2016-07-20
- Last updated
- 2022-11-23
- Certified
- 2022-11-23
Frequently asked questions
- What is Gwenn Leatherman's NPI number?
- Gwenn Leatherman's National Provider Identifier (NPI) is 1164875654, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwenn Leatherman's specialty?
- Gwenn Leatherman is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gwenn Leatherman located?
- Gwenn Leatherman's practice location on file with NPPES is 118 E Oak Ridge Dr Ste 2000, Hagerstown, MD 21740-7890.
- What is Gwenn Leatherman's phone number?
- The practice phone number listed in the NPPES registry for Gwenn Leatherman is (016) 781-8393.
- Does Gwenn Leatherman accept Medicare?
- Gwenn Leatherman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwenn Leatherman's NPI active?
- Yes — Gwenn Leatherman's NPI (1164875654) is active in the NPPES registry as of the last update on 2022-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.