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DR. GWENN LEATHERMAN
NPI 1164875654
Nurse Practitioner - Family in Hagerstown, MD

Active since July 20, 2016PECOS EnrolledAccepts Medicare Assignment
118 E OAK RIDGE DR STE 2000, HAGERSTOWN, MD 21740(016) 781-8393(301) 679-1740 Get Directions Write a Review

NPPES record last updated: November 23, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 23, 2022, Sep 1, 2022, May 16, 2022 and 1 more (4 updates tracked since 2022).

About Dr. Gwenn Leatherman NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GWENN LEATHERMAN (NPI 1164875654) is an individual family provider in Hagerstown, Maryland, licensed in Maryland (R185941) and active in the NPI registry since July 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1164875654
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameDR. GWENN LEATHERMAN
Location Address118 E OAK RIDGE DR STE 2000Hagerstown, MD 21740-7890
Mailing Address118 E Oak Ridge Dr Ste 2000Hagerstown, MD 21740-7890 · (301) 678-1839 · Fax (301) 679-1740
Phone(016) 781-8393
Fax(301) 679-1740
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJuly 20, 2016
Last NPPES UpdateNovember 23, 20224 updates tracked since enumeration
NPPES CertifiedNovember 23, 2022
✔ NPI 1164875654 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MD · R185941
Also ListedRegistered NurseTaxonomy 163W00000X · License R185941 (MD)
Also ListedFamily MedicineTaxonomy 207Q00000X · License R185941 (MD)
118 E OAK RIDGE DR STE 2000, Hagerstown, MD 21740
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gwenn Leatherman is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911295787
PECOS Enrollment IDI20161011000804
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Gwenn Leatherman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Leatherman Healthcare, LLC
0.1 mi
Primary Care
118 E OAK RIDGE DR STE 2000
Hagerstown, MD 21740
  • Reassigned Medicare billing, Maryland enrollment
  • 3 clinicians in this Medicare group
NPI 1972250009 (301) 678-1839

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
278 services142 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
145 services76 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
53 services53 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
20 services20 patients
Transitional care management services for problem of high complexity 99496
Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.
14 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21740 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHRISTINA ANN QUIN CRNP
Nurse Practitioner (Family)
118 E OAK RIDGE DR STE 2000
HAGERSTOWN, MD 21740
Washington County (301) 678-1839
TAMMY ANN MILLS
Technician, Pathology (Phlebotomy)
118 E OAK RIDGE DR STE 2000
HAGERSTOWN, MD 21740
Washington County (301) 582-8563
LABS ON THE GO, LLC
Technician, Pathology (Phlebotomy)
118 E OAK RIDGE DR STE 2000
HAGERSTOWN, MD 21740
Washington County (301) 582-8563
LEATHERMAN HEALTHCARE, LLC
Nurse Practitioner (Primary Care)
118 E OAK RIDGE DR STE 2000
HAGERSTOWN, MD 21740
Washington County (301) 678-1839

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gwenn Leatherman's NPI number?

The NPI number for Gwenn Leatherman is 1164875654. It was assigned to this individual provider in the NPPES registry on July 20, 2016.

Where is Gwenn Leatherman located?

Gwenn Leatherman practices at 118 E Oak Ridge Dr Ste 2000, Hagerstown, MD 21740. The listed phone number is (016) 781-8393.

What is Gwenn Leatherman's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Gwenn Leatherman enrolled in Medicare?

Yes. Gwenn Leatherman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Gwenn Leatherman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gwenn Leatherman reassigns Medicare benefits to Leatherman Healthcare, LLC (Hagerstown, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gwenn Leatherman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gwenn Leatherman was last updated on November 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.