Active NPI
Margaret June Ahrens, MD
- Surgery Physician
- Lancaster, PA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Surgery Physician
- License
- MD478838
- Practice address
- 2101 Embassy Dr
Lancaster, PA 17603-2387 - Phone
- (717) 735-7410
- Fax
- (717) 735-7438
- NPI assigned
- May 2, 2016
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Surgery Physician | 208600000X | MD478838 | PA | Primary |
Addresses
Primary practice location
2101 Embassy Dr
Lancaster, PA 17603-2387
Mailing address
2101 Embassy Dr
Lancaster, PA 17603-2387
Phone (717) 735-7410
Other practice location 1
97 Progress Blvd
Shippensburg, PA 17257-9053
Phone (717) 217-6800
Other practice location 2
601 E Main St
Waynesboro, PA 17268-2332
Phone (717) 217-6800
Other practice location 3
120 N 7th St
Chambersburg, PA 17201-1795
Phone (717) 217-6800
Other practice location 4
24 Antrim Commons Dr
Greencastle, PA 17225-1623
Phone (717) 217-6800
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 15598460 | Other | CAQH |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in PA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- General Surgery
- Education
- Other, 2016
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1500 Highlands Dr
Lititz, PA 17543-7694
Phone (717) 568-8865
1575 Highlands Dr
Lititz, PA 17543-7507
2101 Embassy Dr
Surgical Specialists Upmc
Lancaster, PA 17603-2387
Phone (717) 735-7410
2501 N 3Rd St
Kline Health Center Foot and Ankle
Harrisburg, PA 17110-1904
Phone (717) 782-2100
2501 N 3Rd St 2ND FL Kline HC
Reach Program
Harrisburg, PA 17110-1904
Phone (717) 782-2363
2501 N 3Rd St FL
2 Kline Health Center
Harrisburg, PA 17110-1904
Phone (717) 782-2100
2501 N 3Rd Street 2ND Floor
Pinnaclehealth Psychological Associates
Harrisburg, PA 17110-1904
Phone (717) 782-2143
Hospital & facility affiliations
- Upmc Lititz
- Wellspan Chambersburg Hospital
- Wellspan Waynesboro Hospital
- Wellspan York Hospital
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 1-10 |
| Hernia repair - groin (open) | 1-10 |
| Hernia repair (minimally invasive) | 1-10 |
| Melanoma (skin cancer) excision | 1-10 |
| Skin biopsy | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD478838 | PA | MD | Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Pinnacle Health Medical Services | Surgery | Current | Accepting new patients |
| Pinnacle Health Medical Services | Surgery | Current | Accepting new patients |
| Wellspan Medical Group | Current | Accepting new patients | |
| Pinnacle Health Medical Services | Current | Accepting new patients | |
| Pinnacle Health Medical Services | Past | Accepting new patients |
Locations
24 Antrim Commons Dr
Greencastle, PA 17225
Phone (717) 593-0512
2501 N 3rd St
Fl 2
Harrisburg, PA 17110
Phone (717) 782-2100
2101 Embassy Dr
Lancaster, PA 17603
Phone (717) 735-7410
501 E Main St
Waynesboro, PA 17268
Phone (717) 765-3400
25 Monument Rd
Ste 270
York, PA 17403
Phone (717) 741-8250
601 Memory Ln
York, PA 17402
Phone (717) 851-6670
1001 S George St
York, PA 17403
Phone (717) 812-7687
Interoperability endpoints
- mahrens14403@wellspan.direct-ci.com
Organizations & group practices 5
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Gastroenterology Physician
- Mechanicsburg, PA
- NPI 1295552073
-
- Surgery Physician
- Harrisburg, PA
- NPI 1437790482
-
- Gastroenterology Physician
- York, PA
- NPI 1669770004
-
- Endocrinology, Diabetes & Metabolism Physician
- Mechanicsburg, PA
- NPI 1518918523
Hospital & facility affiliations 13
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Chambersburg, PA
- NPI 1902804552
-
- General Acute Care Hospital
- Lititz, PA
- NPI 1285167916
-
- General Acute Care Hospital
- Waynesboro, PA
- NPI 1821091059
-
- General Acute Care Hospital
- York, PA
- NPI 1326060492
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1462147200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1759968000000",
"number": "1487009072",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2101 EMBASSY DR",
"city": "LANCASTER",
"state": "PA",
"postal_code": "176032387",
"telephone_number": "717-735-7410",
"fax_number": "717-735-7438"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2101 EMBASSY DR",
"city": "LANCASTER",
"state": "PA",
"postal_code": "176032387",
"telephone_number": "717-735-7410",
"fax_number": "717-735-7438"
}
],
"practiceLocations": [
{
"address_1": "97 Progress Blvd",
"address_purpose": "LOCATION",
"city": "Shippensburg",
"state": "PA",
"postal_code": "172579053",
"country_code": "US",
"telephone_number": "717-217-6800",
"fax_number": "717-839-2807",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "601 E Main St",
"address_purpose": "LOCATION",
"city": "Waynesboro",
"state": "PA",
"postal_code": "172682332",
"country_code": "US",
"telephone_number": "717-217-6800",
"fax_number": "717-839-2807",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "120 N 7th St",
"address_purpose": "LOCATION",
"city": "Chambersburg",
"state": "PA",
"postal_code": "172011795",
"country_code": "US",
"telephone_number": "717-217-6800",
"fax_number": "717-839-2807",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "24 Antrim Commons Dr",
"address_purpose": "LOCATION",
"city": "Greencastle",
"state": "PA",
"postal_code": "172251623",
"country_code": "US",
"telephone_number": "717-217-6800",
"fax_number": "717-839-2807",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "AHRENS",
"first_name": "MARGARET",
"middle_name": "JUNE",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2016-05-02",
"last_updated": "2025-10-09",
"certification_date": "2025-10-09",
"status": "A"
},
"taxonomies": [
{
"code": "208600000X",
"taxonomy_group": "",
"desc": "Surgery",
"state": "PA",
"license": "MD478838",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "CAQH",
"identifier": "15598460",
"state": null
}
],
"endpoints": [],
"other_names": []
}Other providers in Lancaster, PA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.