DR. RICHARD M CHASEN (M.D.) – Gastroenterology Physician, NPI 1790780351
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
496 GASTROENTEROLOGY in MD
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Provider Addresses for DR. RICHARD M CHASEN (M.D.)
12510 PROSPERITY DR
STE 200
SILVER SPRING, MD 209041663
Phone: (240) 485-5200
Fax: (301) 625-6906
Type: Mailing
7350, Van Dusen Road, Laurel Oaks, Laurel, Prince George's County, Maryland, 20707, United States
STE 210
LAUREL, MD 207075268
Phone: (301) 498-5500
Fax: (301) 498-7346
Type: Location
6230 Old Dobbin Ln Ste 150
Columbia, MD 210455809
Phone: (410) 730-9363
Fax: (410) 730-2084
Type: Location
7350 Van Dusen Rd Ste 410
Laurel, MD 207075265
Phone: (301) 498-5500
Fax: (301) 498-7346
Type: Location
10770 COLUMBIA PIKE STE 400
SILVER SPRING, MD 209014462
Phone: (301) 498-5500
Fax: (301) 625-6906
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 51 Open Payments records for all available years, with a total value of $977.
Total Amount is formed as General ($977) + Research ($0) + Ownership ($0) = $977.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: ABBVIE INC. ($291).
Total Amount
$977
General + Research + Ownership
Payments
51
Total payment records
General Amount
$977
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $291 |
| Janssen Biotech, Inc. | $200 |
| Takeda Pharmaceuticals U.S.A., Inc. | $117 |
| Madrigal Pharmaceuticals | $69 |
| Celgene Corporation | $63 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2008-12-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20081031000463 | I | Gastroenterology | MD | TBD |
| I20081206000073 | I | Gastroenterology | DC | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 373 | 252 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 156 | 156 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 84 | 83 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 44 | 44 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 43 | 43 | $0 |
Insurance plans in this area (ZIP 20904)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | MD | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 11 | 11 |
| GASTROENTEROLOGY | MD | 45378 | Diagnostic examination of large bowel using an endoscope | 13 | 13 |
| GASTROENTEROLOGY | MD | 45385 | Removal of polyps or growths of large bowel using an endoscope | 44 | 43 |
| GASTROENTEROLOGY | MD | 46600 | Diagnostic examination of the anus using an endoscope | 11 | 11 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | VA | |
| Gastroenterology, Internal Medicine | VA | |
| Internal Medicine | VA | |
| - | MD | |
| Certified Registered Nurse Anesthetist (Crna) | MD | |
| G A S T R O E N T E R O L O G Y | MD | |
| Certified Registered Nurse Anesthetist (Crna) | VA | |
| P A T H O L O G Y | MD | |
| G A S T R O E N T E R O L O G Y | VA | |
| - | MD |
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