Active NPI
Marisa Gilstrop Thompson, M.D.
- Maternal & Fetal Medicine Physician
- Allentown, PA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Maternal & Fetal Medicine Physician
- License
- MD477851
- Practice address
- 3900 Hamilton Blvd Ste 201
Allentown, PA 18103-6122 - Phone
- (484) 664-7555
- NPI assigned
- Apr 14, 2014
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Obstetrics & Gynecology Physician | 207V00000X | D84948 | MD | |
| Maternal & Fetal Medicine Physician | 207VM0101X | C1-0025093 | DE | |
| Maternal & Fetal Medicine Physician | 207VM0101X | MD477851 | PA | Primary |
Addresses
Primary practice location
3900 Hamilton Blvd Ste 201
Allentown, PA 18103-6122
Mailing address
2100 Mack Blvd FL 4
Allentown, PA 18103-5622
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MD, DE
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Obstetrics/Gynecology
- Education
- Other, 2014
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1 Centurian Dr
Newark, DE 19713-2127
Phone (302) 319-5680
4701 Ogletown Stanton Rd
Newark, DE 19713-2055
Phone (302) 623-4500
Hospital & facility affiliations
- Christiana Hospital
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| D84948 | MD | MD | Obstetrics & Gynecology Physician |
| C1-0025093 | DE | MD | Maternal & Fetal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Christiana Care Health Services Inc | Multi-Specialty | Current | Accepting new patients |
| Christiana Care Health Services, Inc | Multi-Specialty | Current | Accepting new patients |
| Johns Hopkins University | Multi-Specialty | Current | Accepting new patients |
| Johns Hopkins University | Multi-Specialty | Current | Accepting new patients |
| Delaware Center for Maternal Fetal Medicine of Christiana Care | Multi-Specialty | Current | Accepting new patients |
| Johns Hopkins University | Multi-Specialty | Current | Accepting new patients |
| Christiana Care Health Services Inc | Multi-Specialty | Current | Accepting new patients |
| Christiana Care Health Services, Inc | Multi-Specialty | Past | Accepting new patients |
| Christiana Care Health Services Inc | Multi-Specialty | Past | Accepting new patients |
Locations
Christiana Hospital Emergency
Newark, DE 19718
4755 Ogletown Stanton Rd
Newark, DE 19718
Phone (302) 733-1700
4701 Ogletown Stanton Rd
Ste 2200
Newark, DE 19713
Phone (302) 366-1200
1 Centurian Dr
Ste 312
Newark, DE 19713
Phone (302) 319-5680
1401 Foulk Rd
Ste 100B
Wilmington, DE 19803
Phone (302) 320-9440
1800 Orleans St
Baltimore, MD 21287
Phone (410) 502-2037
10755 Falls Rd
Timonium, MD 21093
Phone (410) 583-2727
Interoperability endpoints
- mthompson3333962@direct.trinity-health.org
Organizations & group practices 9
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Endocrinology, Diabetes & Metabolism Physician
- Wilmington, DE
- NPI 1770568107
Multi-Specialty
-
- Maternal & Fetal Medicine Physician
- Newark, DE
- NPI 1356487854
Multi-Specialty
-
- Pain Medicine (Anesthesiology) Physician
- Baltimore, MD
- NPI 1922008549
Multi-Specialty
-
- Neurology Physician
- Chadds Ford, PA
- NPI 1881228484
Multi-Specialty
-
- Gynecologic Oncology Physician
- Newark, DE
- NPI 1174508410
Multi-Specialty
-
- Obstetrics & Gynecology Physician
- Lutherville, MD
- NPI 1255315339
Multi-Specialty
-
- Obstetrics & Gynecology Physician
- Newark, DE
- NPI 1376528729
Multi-Specialty
-
- Family Medicine Physician
- Hockessin, DE
- NPI 1134104565
Multi-Specialty
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Wilmington, DE
- NPI 1134194038
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1397433600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1784073600000",
"number": "1124447685",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2100 MACK BLVD FL 4",
"city": "ALLENTOWN",
"state": "PA",
"postal_code": "181035622"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3900 HAMILTON BLVD STE 201",
"city": "ALLENTOWN",
"state": "PA",
"postal_code": "181036122",
"telephone_number": "484-664-7555"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GILSTROP THOMPSON",
"first_name": "MARISA",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2014-04-14",
"last_updated": "2026-07-15",
"certification_date": "2026-07-15",
"status": "A"
},
"taxonomies": [
{
"code": "207V00000X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology",
"state": "MD",
"license": "D84948",
"primary": false
},
{
"code": "207VM0101X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
"state": "DE",
"license": "C1-0025093",
"primary": false
},
{
"code": "207VM0101X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
"state": "PA",
"license": "MD477851",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Allentown, PA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.