Individual provider Active NPI

Karen Ama-Serwa Chachu, MD

  • Gastroenterology Physician
  • Oxon Hill, MD
National Provider Identifier
1871727396
Registry record updated Jan 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
D0105263 Issued in MD
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

Updated by the provider on Jan 12, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
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, DC2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20151021000689 NC Practitioner - Gastroenterology 6507175247 Reassigns benefits to 1 organization
I20251114003083 DC Practitioner - Gastroenterology 6507175247 Reassigns benefits to 1 organization

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
Capital Digestive Care LLCGroup PAC ID 3870669419, 241 clinicians
Duke Health Integrated Practice IncGroup PAC ID 8325412737, 3,140 clinicians

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

ProcedureNumber of procedures
Colonoscopy63
Upper gastrointestinal (GI) endoscopy for acid reflux59

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
MT194931PAMDInternal Medicine Physician
MD600004807DCMDGastroenterology Physician
D0105263MDMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Capital Digestive Care, LLC Gastroenterology CurrentSince Nov 1, 2025 Accepting new patients
Capital Digestive Care, LLC Gastroenterology CurrentSince Nov 1, 2025 Accepting new patients
Endoscopy Center of Washington DC LP Current Accepting new patients
Duke Health Integrated Practice, Inc. CurrentSince Jul 1, 2023 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

  • Direct secure messaging: 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.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

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

Verify at the official NPI Registry.