TAMMY HA STONE
NPI 1679274930
Nurse Practitioner - Family in Annapolis, MD
About Tammy Ha Stone NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY HA STONE (NPI 1679274930) is an individual family provider in Annapolis, Maryland, licensed in Maryland (R216606) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses 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
Tammy Ha Stone 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 Tammy Stone reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Potomac, MD 20854
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 65 clinicians in this Medicare group
Rockville, MD 20854
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 168 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 9
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21401 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.
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 Tammy Stone's NPI number?
The NPI number for Tammy Stone is 1679274930. It was assigned to this individual provider in the NPPES registry on March 14, 2023.
Where is Tammy Stone located?
Tammy Stone practices at 2601 Riva Rd, Annapolis, MD 21401. The listed phone number is (410) 571-2090.
What is Tammy Stone's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Tammy Stone enrolled in Medicare?
Yes. Tammy Stone 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 Tammy Stone's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Stone reassigns Medicare benefits to 2 organizations: Minuteclinic Primary Care Maryland LLC (Potomac, MD) and Minuteclinic LLC (Rockville, 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 Tammy Stone'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 Tammy Stone was last updated on March 16, 2023. 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.
# Tammy Ha Stone · NPI 1679274930
Family physician in Annapolis, Maryland. Individual provider, active in the CMS NPPES registry since March 14, 2023.
## Identity
- **NPI:** 1679274930 (Entity type: Individual)
- **Enumerated:** March 14, 2023
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** R216606 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 2601 RIVA RD, Annapolis, MD 21401-7304
- **Phone:** (410) 571-2090
## 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): Minuteclinic Primary Care Maryland LLC (NPI 1487461034, Potomac, MD); Minuteclinic LLC (NPI 1134191836, Rockville, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** March 16, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1679274930) · Data from the CMS NPPES public registry.