ABIGAIL HAMILTON MD
NPI 1821592817
Family Medicine in Halethorpe, MD
About Abigail Hamilton Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ABIGAIL HAMILTON MD (NPI 1821592817) is an individual family medicine provider in Halethorpe, Maryland, licensed in Maryland (D0090235) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Abigail Hamilton Md 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.
Medicare Billing Reassignments
2Medicare enrollment records show Abigail Hamilton reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Halethorpe, MD 21227
- Reassigned Medicare billing, Maryland enrollment
- 1,253 clinicians in this Medicare group
Silver Spring, MD 20910
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1205087517 (Maryland)
- 184 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21227 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HALETHORPE, MD 21227
HALETHORPE, MD 21227
HALETHORPE, MD 21227
HALETHORPE, MD 21227
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 Abigail Hamilton's NPI number?
The NPI number for Abigail Hamilton is 1821592817. It was assigned to this individual provider in the NPPES registry on March 22, 2018.
Where is Abigail Hamilton located?
Abigail Hamilton practices at 1701 Twin Springs Rd, Halethorpe, MD 21227. The listed phone number is (410) 737-5000.
What is Abigail Hamilton's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Abigail Hamilton enrolled in Medicare?
Yes. Abigail Hamilton 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 organizations bill Medicare for Abigail Hamilton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abigail Hamilton reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Halethorpe, MD) and Patient First Maryland Medical Group PLLC (Silver Spring, MD). Each 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 Abigail Hamilton'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 Abigail Hamilton was last updated on November 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Abigail Hamilton, MD · NPI 1821592817
Family Medicine physician in Halethorpe, Maryland. Individual provider, active in the CMS NPPES registry since March 22, 2018.
## Identity
- **NPI:** 1821592817 (Entity type: Individual)
- **Enumerated:** March 22, 2018
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** D0090235 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1701 TWIN SPRINGS RD, Halethorpe, MD 21227-3553
- **Phone:** (410) 737-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1417294984, Halethorpe, MD); Patient First Maryland Medical Group PLLC (NPI 1265866503, Silver Spring, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** November 30, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1821592817) · Data from the CMS NPPES public registry.