Active NPI
Homayoon Mahjoob, M.D.
- Gastroenterology Physician
- Glenn Dale, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- 236692
- Practice address
- 12150 Annapolis Rd Ste 312
Glenn Dale, MD 20769-9183 - Phone
- (301) 352-7771
- NPI assigned
- May 8, 2007
- Sex
- Male
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Gastroenterology Physician | 207RG0100X | EMC0005932 | MI | |
| Gastroenterology Physician | 207RG0100X | 236692 | MA | Primary |
| Gastroenterology Physician | 207RG0100X | C1-0028553 | DE |
Addresses
Primary practice location
12150 Annapolis Rd Ste 312
Glenn Dale, MD 20769-9183
Mailing address
12150 Annapolis Rd Ste 312
Glenn Dale, MD 20769-9183
Phone (301) 352-7771
Other practice location 1
18947 John J Williams Hwy
Rehoboth Beach, DE 19971-4474
Phone (302) 645-9325
Other practice location 2
424 Savannah Rd
Lewes, DE 19958-1462
Phone (302) 645-9325
Other practice location 3
33663 Bayview Medical Dr Unit 2
Lewes, DE 19958-1663
Phone (302) 645-9325
Other identifiers 2
| Identifier | Type | State | Issuer |
|---|---|---|---|
| EMC0005932 | Other | MI | MEDICAL LICENSE |
| D0058186 | Other | MD | MEDICAL LICENSE |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in DC, MI, VA, DE
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 4
Care Compare profile
Medicare Care Compare- Specialty
- Gastroenterology
- Education
- Other, 1991
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
12150 Annapolis Rd
Suite 312
Glenn Dale, MD 20769-9183
Phone (301) 352-7771
424 Savannah Rd
Lewes, DE 19958-1462
Phone (302) 645-3525
Hospital & facility affiliations
- Beebe Medical Center
- University of MD Capital Region Medical Center
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 91 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 220 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| C1-0028553 | DE | MD | Gastroenterology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Inova Health Care Services | Current | Accepting new patients | |
| Inova Health Care Services | Current | Accepting new patients | |
| Inova Health Care Services | Current | Accepting new patients | |
| Beebe Physician Network Inc. | Gastroenterology | Current | Accepting new patients |
| Promed Healthcare | Current | Accepting new patients | |
| Ascension Medical Group Promed | Gastroenterology | Current | Accepting new patients |
| Greenbelt Endoscopy Center,LLC | Current | Accepting new patients | |
| Ascension Medical Group Promed | Current | Accepting new patients | |
| Greenbelt Endoscopy Center, LLC | Current | Accepting new patients | |
| Frederick Health Hospital Inc | Past | Accepting new patients |
Locations
3800 Reservoir Rd NW
Washington, DC 20007
Phone (202) 687-2203
33663 Bayview Medical Dr
#2
Lewes, DE 19958
Phone (302) 645-9325
424 Savannah Rd
Lewes, DE 19958
Phone (302) 441-1078
32550 Docs Pl
Unit 2
Millville, DE 19967
Phone (302) 539-4302
18947 John J Williams Hwy
Rehoboth Beach, DE 19971
Phone (302) 645-3010
9821 Greenbelt Rd
Ste 103
Lanham, MD 20706
Phone (301) 552-1801
1717 Shaffer St
Ste 2
Kalamazoo, MI 49048
1521 Gull Rd
Kalamazoo, MI 49048
Phone (269) 226-5165
7901 Angling Rd
Portage, MI 49024
Phone (269) 324-8405
8081 Innovation Park Dr
Fairfax, VA 22031
Phone (571) 472-0606
8095 Innovation Park Dr
Bldg C
Fairfax, VA 22031
Phone (571) 472-6253
3300 Gallows Rd
Falls Church, VA 22042
Phone (703) 352-9395
44045 Riverside Pkwy
Leesburg, VA 20176
Phone (703) 858-6040
224B Cornwall St NW
Leesburg, VA 20176
Phone (703) 771-2894
Interoperability endpoints
- hmahjoob32137@tuftsmedicine.direct-ci.com
Organizations & group practices 11
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.
-
- Family Medicine Physician
- Portage, MI
- NPI 1497709869
-
- Endoscopy Clinic/Center
- Lanham, MD
- NPI 1013170521
-
- Internal Medicine Physician
- Kalamazoo, MI
- NPI 1720009954
Gastroenterology
-
- Medical Technologist
- Sterling, VA
- NPI 1699655589
-
- Rural Health Clinic/Center
- Plainwell, MI
- NPI 1487708830
-
- General Acute Care Hospital
- Frederick, MD
- NPI 1538165527
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Upper Marlboro, MD
- NPI 1720099286
-
- General Acute Care Hospital
- Lewes, DE
- NPI 1821196486
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1178582400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1759968000000",
"number": "1740494178",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "12150 ANNAPOLIS RD STE 312",
"city": "GLENN DALE",
"state": "MD",
"postal_code": "207699183",
"telephone_number": "301-352-7771"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "12150 ANNAPOLIS RD STE 312",
"city": "GLENN DALE",
"state": "MD",
"postal_code": "207699183",
"telephone_number": "301-352-7771"
}
],
"practiceLocations": [
{
"address_1": "18947 John J Williams Hwy",
"address_purpose": "LOCATION",
"city": "Rehoboth Beach",
"state": "DE",
"postal_code": "199714474",
"country_code": "US",
"telephone_number": "302-645-9325",
"fax_number": "302-644-7162",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "424 Savannah Rd",
"address_purpose": "LOCATION",
"city": "Lewes",
"state": "DE",
"postal_code": "199581462",
"country_code": "US",
"telephone_number": "302-645-9325",
"fax_number": "302-644-7162",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "33663 Bayview Medical Dr Unit 2",
"address_purpose": "LOCATION",
"city": "Lewes",
"state": "DE",
"postal_code": "199581663",
"country_code": "US",
"telephone_number": "302-645-9325",
"fax_number": "302-644-7162",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MAHJOOB",
"first_name": "HOMAYOON",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-05-08",
"last_updated": "2025-10-09",
"certification_date": "2025-10-09",
"status": "A"
},
"taxonomies": [
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "MI",
"license": "EMC0005932",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "MA",
"license": "236692",
"primary": true
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "DE",
"license": "C1-0028553",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "MEDICAL LICENSE",
"identifier": "EMC0005932",
"state": "MI"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "MEDICAL LICENSE",
"identifier": "D0058186",
"state": "MD"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Glenn Dale, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 9, 2025; 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.