Karen Chachu, MD
NPI 1871727396 · Gastroenterology Physician · Oxon Hill, MD
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Chachu, MD is a Gastroenterology Physician provider in Oxon Hill, MD (NPI 1871727396).
Provider details
- NPI number
- 1871727396
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD600004807 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
324 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 66 | $96 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 53 | $223 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 44 | $96 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 44 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 34 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 69 | 64 |
| Famotidine | 28 | — |
| Ustekinumabbrand: Stelara | 27 | — |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 23 | 23 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 22 | 22 |
| Omeprazole | 21 | 16 |
| Mesalaminebrand: Mesalamine Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15,145 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 2000 Pennsylvania Ave Nw Ste 3010Washington, DC 20006-1929Phone: (240) 737-0085Fax: (202) 296-0301
- 5500 Friendship Blvd Ste T90Chevy Chase, MD 20815-7219Phone: (240) 737-0085Fax: (202) 296-0310
- 6100 Executive Blvd Ste 301North Bethesda, MD 20852-3913Phone: (240) 737-0085Fax: (202) 296-0301
Registry dates
- Enumerated
- 2009-05-12
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Karen Chachu's NPI number?
- Karen Chachu's National Provider Identifier (NPI) is 1871727396, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Chachu's specialty?
- Karen Chachu is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Chachu located?
- Karen Chachu's practice location on file with NPPES is 125 Potomac Psge Ste 250, Oxon Hill, MD 20745-1580.
- What is Karen Chachu's phone number?
- The practice phone number listed in the NPPES registry for Karen Chachu is (240) 737-0085.
- Does Karen Chachu accept Medicare?
- Karen Chachu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Chachu's NPI active?
- Yes — Karen Chachu's NPI (1871727396) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.