DR. L. MARTHA ANN THOMAS MD
NPI 1689788531
Obstetrics & Gynecology in York, PA
About Dr. L. Martha Ann Thomas Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. L. MARTHA ANN THOMAS MD (NPI 1689788531) is an individual obstetrics & gynecology provider in York, Pennsylvania, licensed in Pennsylvania (MD019947E) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Carroll Hospital Center, and maintains a secondary practice location in York.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Other Identifiers 17
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. L. Martha Ann Thomas 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
4Medicare enrollment records show L. Martha Thomas reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
York, PA 17403
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,902 clinicians in this Medicare group
Westminster, MD 21157
- Reassigned Medicare billing, Maryland enrollment
- 114 clinicians in this Medicare group
Fairfax, VA 22030
- Reassigned Medicare billing, District of Columbia enrollment
- 16 clinicians in this Medicare group
Midlothian, VA 23114
- Reassigned Medicare billing, District of Columbia enrollment
- 54 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Carroll Hospital Center
Acute Care Hospitals · Westminster, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 17403 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.
YORK, PA 17403
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 L. Martha Thomas's NPI number?
The NPI number for L. Martha Thomas is 1689788531. It was assigned to this individual provider in the NPPES registry on August 18, 2006. The provider is also known as Latona Martha Ann Thomas MD.
Where is L. Martha Thomas located?
L. Martha Thomas practices at 1001 S George St, York, PA 17403. The listed phone number is (717) 851-2345.
What is L. Martha Thomas's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is L. Martha Thomas enrolled in Medicare?
Yes. L. Martha Thomas 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 L. Martha Thomas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), L. Martha Thomas reassigns Medicare benefits to 4 organizations: Pinnacle Health Medical Services (York, PA), Obhg Maryland PC (Westminster, MD), Fairfax Loudoun Obgyn, Inc (Fairfax, VA) and Obhg Virginia, LLC (Midlothian, VA). 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 L. Martha Thomas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is L. Martha Thomas affiliated with any hospitals?
According to CMS data, L. Martha Thomas is affiliated with Carroll Hospital Center.
When was this NPI record last updated?
The NPPES record for L. Martha Thomas was last updated on July 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. L. Martha Ann Thomas, MD · NPI 1689788531
Obstetrics & Gynecology physician in York, Pennsylvania. Individual provider, active in the CMS NPPES registry since August 18, 2006.
## Identity
- **NPI:** 1689788531 (Entity type: Individual)
- **Enumerated:** August 18, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** MD019947E (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1001 S GEORGE ST, York, PA 17403-3676
- **Phone:** (717) 851-2345
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Pinnacle Health Medical Services (NPI 1740936186, York, PA); Obhg Maryland PC (NPI 1750196564, Westminster, MD); Fairfax Loudoun Obgyn, Inc (NPI 1922356054, Fairfax, VA); Obhg Virginia, LLC (NPI 1972807394, Midlothian, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1976
## Record status
- **NPPES last updated:** July 19, 2021
- **Other identifiers:** Medicaid 000890997 (PA); Other 212644 (PA); Other 4598419 (PA); and 14 more
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Source: [NPI Profile](https://npiprofile.com/npi/1689788531) · Data from the CMS NPPES public registry.