MARISA GILSTROP THOMPSON M.D.
NPI 1124447685
Obstetrics & Gynecology - Maternal & Fetal Medicine in Allentown, PA
About Marisa Gilstrop Thompson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISA GILSTROP THOMPSON M.D. (NPI 1124447685) is an individual maternal & fetal medicine provider in Allentown, Pennsylvania, licensed in Pennsylvania (MD477851) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2014).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Marisa Gilstrop Thompson M.d. 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 Marisa Gilstrop Thompson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Allentown, PA 18103
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,895 clinicians in this Medicare group
Wilmington, DE 19803
- Reassigned Medicare billing, Delaware enrollment
- 1,531 clinicians in this Medicare group
Newark, DE 19713
- Reassigned Medicare billing, Delaware enrollment
- Medicare enrollment name: The Delaware Center For Maternal And Fetal Medicine Of Christiana Care
- 16 clinicians in this Medicare group
Belcamp, MD 21017
- Reassigned Medicare billing, Maryland enrollment
- 4,483 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 18103 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
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 Marisa Gilstrop Thompson's NPI number?
The NPI number for Marisa Gilstrop Thompson is 1124447685. It was assigned to this individual provider in the NPPES registry on April 14, 2014.
Where is Marisa Gilstrop Thompson located?
Marisa Gilstrop Thompson practices at 3900 Hamilton Blvd Ste 201, Allentown, PA 18103. The listed phone number is (484) 664-7555.
What is Marisa Gilstrop Thompson's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Marisa Gilstrop Thompson enrolled in Medicare?
Yes. Marisa Gilstrop Thompson 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 Marisa Gilstrop Thompson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marisa Gilstrop Thompson reassigns Medicare benefits to 4 organizations: Lehigh Valley Physician Group (Allentown, PA), Christiana Care Health Services, Inc (Wilmington, DE), Delaware Center For Maternal Fetal Medicine Of Christiana Care (Newark, DE) and Johns Hopkins University (Belcamp, 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 Marisa Gilstrop Thompson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marisa Gilstrop Thompson accept?
Health plans from AmeriHealth Caritas Next and Highmark Blue Cross Blue Shield Delaware list Marisa Gilstrop Thompson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Marisa Gilstrop Thompson was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Marisa Gilstrop Thompson, M.D. · NPI 1124447685
Maternal & Fetal Medicine physician in Allentown, Pennsylvania. Individual provider, active in the CMS NPPES registry since April 14, 2014.
## Identity
- **NPI:** 1124447685 (Entity type: Individual)
- **Enumerated:** April 14, 2014
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** MD477851 (Pennsylvania)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3900 HAMILTON BLVD STE 201, Allentown, PA 18103-6122
- **Phone:** (484) 664-7555
## 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): Lehigh Valley Physician Group (NPI 1053495341, Allentown, PA); Christiana Care Health Services, Inc (NPI 1619951068, Wilmington, DE); Delaware Center For Maternal Fetal Medicine Of Christiana Care (NPI 1356487854, Newark, DE); Johns Hopkins University (NPI 1376342774, Belcamp, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 2014
## Record status
- **NPPES last updated:** July 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124447685) · Data from the CMS NPPES public registry.