Collins P. Sein, MD
Internal Medicine Physician · Waldorf, MD
Collins P. Sein, MD is an internal medicine physician with a practice address in Waldorf, Maryland, and NPI 1699769554, issued on Sep 7, 2005. Check the license (Maryland D0046979, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Collins P. Sein
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0046979 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3460 Old Washington RD, Waldorf, MD 20602
- Phone
- (301) 934-8811
- Enumerated
- Sep 7, 2005
- Record last updated
- Apr 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (301) 934-9321
- Medicaid ID
- 431203100 MD
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 3460 Old Washington RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Karim Elrafei, D.D.SDentist1588979538
Verify Collins P. Sein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0046979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,869 Medicare Part D claims for 534 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 38 claims were for opioids.
Most prescribed
- Amlodipine Besylate510 claims
- Atorvastatin Calcium468 claims
- Rosuvastatin Calcium382 claims
- Metformin Hcl260 claims
- Levothyroxine Sodium244 claims
- Hydrochlorothiazide227 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 18.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $292.43
14 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Collins P. Sein among 3,904 internal medicine physician records in Maryland
Collins P. Sein, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2018 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 internal medicine physician records list a practice address in Waldorf
They are 29 of the 1,272 NPPES records with a practice address in Waldorf, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Waldorf → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Edith Aniedobe, MDWaldorf, MD 206021467641183
- Zafar Ansari, MDWaldorf, MD 206021023125218
- Richard Cook, M.D.Waldorf, MD 206021811970056
- Annette Gonsalves, MDWaldorf, MD 206021306910716
- Caroly Guillen Aguirre, MDWaldorf, MD 206021104566553
- Annick Hebou, MDWaldorf, MD 206021629235759
- Nirmaladevi Jayanthan, MDWaldorf, MD 206021134297450
- Gowri Kularatna, M.D.Waldorf, MD 206021861682957
Common questions
What is Collins P. Sein, MD's NPI number?
Collins P. Sein, MD's National Provider Identifier (NPI) is 1699769554, issued on Sep 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Collins P. Sein, MD located?
The NPPES record lists a practice address at 3460 Old Washington RD, Waldorf, MD, 20602. Phone: (301) 934-8811. Providers update this record themselves, so call before visiting.
How can I verify Collins P. Sein, MD's license?
NPPES lists Maryland license number D0046979, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Collins P. Sein, MD prescribe under Medicare Part D?
In 2024, Collins P. Sein, MD had 6,869 Medicare Part D claims for 534 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Collins P. Sein, MD's MIPS final score?
The 2023 MIPS final score is 18.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.