Active NPI
Karen Ama-Serwa Chachu, MD
- Gastroenterology Physician
- Oxon Hill, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- D0105263
- Practice address
- 125 Potomac Psge Ste 250
Oxon Hill, MD 20745-1580 - Phone
- (240) 737-0085
- Fax
- (202) 296-0301
- NPI assigned
- May 12, 2009
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Gastroenterology Physician | 207RG0100X | MD600004807 | DC | |
| Internal Medicine Physician | 207R00000X | MT194931 | PA | |
| Gastroenterology Physician | 207RG0100X | 2015-01167 | NC | |
| Gastroenterology Physician | 207RG0100X | D0105263 | MD | Primary |
Addresses
Primary practice location
125 Potomac Psge Ste 250
Oxon Hill, MD 20745-1580
Mailing address
10770 Columbia Pike Ste 400
Silver Spring, MD 20901-4462
Phone (240) 737-0085
Other practice location 1
6100 Executive Blvd Ste 301
North Bethesda, MD 20852-3913
Phone (240) 737-0085
Other practice location 2
5500 Friendship Blvd Ste T90
Chevy Chase, MD 20815-7219
Phone (240) 737-0085
Other practice location 3
2000 Pennsylvania Ave NW Ste 3010
Washington, DC 20006-1929
Phone (240) 737-0085
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NC, DC
- 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
- Gastroenterology
- Education
- Washington College of Physicians and Surgeons, 2009
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
125 Potomac Psge
Oxon Hill, MD 20745-1580
Phone (240) 238-0067
2021 K St NW
Suite T 110 Metroploitan Gastroenterology
Washington, DC 20061-1036
Phone (202) 296-3449
3400 Wake Forest Rd
Suite 310
Raleigh, NC 27609-7317
Phone (919) 620-4855
40 Duke Medicine Cir
Durham, NC 27710-4000
Phone (919) 684-8111
6100 Executive Blvd
Rockville, MD 20852-3902
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 63 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 59 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MT194931 | PA | MD | Internal Medicine Physician |
| MD600004807 | DC | MD | Gastroenterology Physician |
| D0105263 | MD | MD | Gastroenterology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Capital Digestive Care, LLC | Gastroenterology | Current | Accepting new patients |
| Capital Digestive Care, LLC | Gastroenterology | Current | Accepting new patients |
| Endoscopy Center of Washington DC LP | Current | Accepting new patients | |
| Duke Health Integrated Practice, Inc. | Current | Accepting new patients | |
| Capital Digestive Care LLC | Gastroenterology | Current | Accepting new patients |
| Capital Digestive Care ,LLC | Gastroenterology | Past | Accepting new patients |
Locations
2000 Pennsylvania Ave NW
Ste 3010
Washington, DC 20006
Phone (202) 296-3449
5550 Friendship Blvd
Ste T90
Chevy Chase, MD 20815
Phone (301) 654-2521
125 Potomac Psge
Ste 250
Oxon Hill, MD 20745
Phone (240) 238-0067
6100 Executive Blvd
Ste 301
Rockville, MD 20852
10770 Columbia Pike
Ste 400
Silver Spring, MD 20901
Phone (215) 589-9012
40 Duke Medicine Cir
Durham, NC 27710
Phone (919) 681-6588
2100 Erwin Rd
Durham, NC 27705
Phone (919) 648-8111
3480 Wake Forest Rd
Raleigh, NC 27609
Phone (919) 862-5075
3480 Wake Forest Rd
Ste 500
Raleigh, NC 27609
Phone (919) 684-6437
10207 Cerny St
Ste 200
Raleigh, NC 27617
Phone (919) 385-7675
Interoperability endpoints
- kchachu245383@direct.medicine.duke.edu
Organizations & group practices 6
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.
-
- General Practice Physician
- Durham, NC
- NPI 1205553369
-
- Gastroenterology Physician
- Temple Hills, MD
- NPI 1437997988
-
- Gastroenterology Physician
- Chevy Chase, MD
- NPI 1700624244
-
dba The Endoscopy Center of Washington, D.C.
- Ambulatory Surgical Clinic/Center
- Washington, DC
- NPI 1154301240
-
- Gastroenterology Physician
- Suffolk, VA
- NPI 1760541460
Hospital & facility affiliations 7
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Duke Raleigh Hospital, a campus of Duke University Hospital
- Rehabilitation Hospital Unit
- Raleigh, NC
- NPI 1205225646
-
dba Duke Raleigh Hospital, a campus of Duke University Hospital
- Clinical Medical Laboratory
- Raleigh, NC
- NPI 1306828108
Hospital
-
dba Duke University Hospital
- Clinical Medical Laboratory
- Durham, NC
- NPI 1508847047
Hospital
-
dba Duke University Hospital
- Land Ambulance
- Durham, NC
- NPI 1417954942
Hospital
-
dba Duke University Hospital
- Rehabilitation Hospital Unit
- Durham, NC
- NPI 1538166061
-
dba Duke University Hospital
- General Acute Care Hospital
- Durham, NC
- NPI 1992703540
-
dba Sibley Memorial Hospital
- General Acute Care Hospital
- Washington, DC
- NPI 1366492977
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1242086400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1768176000000",
"number": "1871727396",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "10770 COLUMBIA PIKE STE 400",
"city": "SILVER SPRING",
"state": "MD",
"postal_code": "209014462",
"telephone_number": "240-737-0085",
"fax_number": "202-296-0301"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "125 POTOMAC PSGE STE 250",
"city": "OXON HILL",
"state": "MD",
"postal_code": "207451580",
"telephone_number": "240-737-0085",
"fax_number": "202-296-0301"
}
],
"practiceLocations": [
{
"address_1": "6100 Executive Blvd Ste 301",
"address_purpose": "LOCATION",
"city": "North Bethesda",
"state": "MD",
"postal_code": "208523913",
"country_code": "US",
"telephone_number": "240-737-0085",
"fax_number": "202-296-0301",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "5500 Friendship Blvd Ste T90",
"address_purpose": "LOCATION",
"city": "Chevy Chase",
"state": "MD",
"postal_code": "208157219",
"country_code": "US",
"telephone_number": "240-737-0085",
"fax_number": "202-296-0310",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "2000 Pennsylvania Ave NW Ste 3010",
"address_purpose": "LOCATION",
"city": "Washington",
"state": "DC",
"postal_code": "200061929",
"country_code": "US",
"telephone_number": "240-737-0085",
"fax_number": "202-296-0301",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "CHACHU",
"first_name": "KAREN",
"middle_name": "AMA-SERWA",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2009-05-12",
"last_updated": "2026-01-12",
"certification_date": "2026-01-12",
"status": "A"
},
"taxonomies": [
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "DC",
"license": "MD600004807",
"primary": false
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "PA",
"license": "MT194931",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "NC",
"license": "2015-01167",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "MD",
"license": "D0105263",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Oxon Hill, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 12, 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.