GEMMA MELANIE ARMSTRONG D.O.
NPI 1306003652
Family Medicine in Havre De Grace, MD
About Gemma Melanie Armstrong D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GEMMA MELANIE ARMSTRONG D.O. (NPI 1306003652) is an individual family medicine provider in Havre De Grace, Maryland, licensed in Maryland (H77365) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2007).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Gemma Melanie Armstrong D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Gemma Armstrong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Havre De Grace, MD 21078
- Reassigned Medicare billing, Maryland enrollment
- 24 clinicians in this Medicare group
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 2
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Union Hospital Of Cecil County
Acute Care Hospitals · Elkton, MDUmd Upper Chesapeake Medical Center
Acute Care Hospitals · Bel Air, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21078 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 7
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HAVRE DE GRACE, MD 21078
HAVRE DE GRACE, MD 21078
HAVRE DE GRACE, MD 21078
HAVRE DE GRACE, MD 21078
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 Gemma Armstrong's NPI number?
The NPI number for Gemma Armstrong is 1306003652. It was assigned to this individual provider in the NPPES registry on May 22, 2008. The provider is also known as Gemma M Arias D.O..
Where is Gemma Armstrong located?
Gemma Armstrong practices at 253 Lewis Ln Suite 202, Havre De Grace, MD 21078. The listed phone number is (443) 502-7060.
What is Gemma Armstrong's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Gemma Armstrong enrolled in Medicare?
Yes. Gemma Armstrong is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Gemma Armstrong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gemma Armstrong reassigns Medicare benefits to West Cecil Health Center Inc. (Havre De Grace, 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 Gemma Armstrong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gemma Armstrong affiliated with any hospitals?
According to CMS data, Gemma Armstrong is affiliated with Union Hospital Of Cecil County and Umd Upper Chesapeake Medical Center.
When was this NPI record last updated?
The NPPES record for Gemma Armstrong was last updated on December 15, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Gemma Melanie Armstrong, D.O. · NPI 1306003652
Family Medicine physician in Havre De Grace, Maryland. Individual provider, active in the CMS NPPES registry since May 22, 2008.
## Identity
- **NPI:** 1306003652 (Entity type: Individual)
- **Enumerated:** May 22, 2008
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** H77365 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 253 LEWIS LN, SUITE 202, Havre De Grace, MD 21078-3750
- **Phone:** (443) 502-7060 · **Fax:** (410) 378-9922
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** West Cecil Health Center Inc. (NPI 1437697273, Havre De Grace, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Lake Erie College Of Osteopathic Medicine, Erie, class of 2007
## Record status
- **NPPES last updated:** December 15, 2015
- **Other identifiers:** Medicaid 102577005 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1306003652) · Data from the CMS NPPES public registry.