Collins Sein, MD
NPI 1699769554 · Internal Medicine Physician · Waldorf, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Collins Sein, MD is a Internal Medicine Physician provider in Waldorf, MD (NPI 1699769554).
Provider details
- NPI number
- 1699769554
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0046979 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,548 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,120 | $122 |
| Administration of Influenza Virus VaccineG0008 | 182 | $24 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 155 | $87 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 45 | $13 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 35 | $14 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 111 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 510 | 149 |
| Atorvastatin Calcium | 468 | 139 |
| Rosuvastatin Calcium | 382 | 121 |
| Metformin Hcl | 260 | 88 |
| Levothyroxine Sodium | 244 | 62 |
| Hydrochlorothiazide | 227 | 66 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$292 across 14 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
Registry dates
- Enumerated
- 2005-09-07
- Last updated
- 2018-04-05
Frequently asked questions
- What is Collins Sein's NPI number?
- Collins Sein's National Provider Identifier (NPI) is 1699769554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Collins Sein's specialty?
- Collins Sein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Collins Sein located?
- Collins Sein's practice location on file with NPPES is 3460 Old Washington Rd, Waldorf, MD 20602-3240.
- What is Collins Sein's phone number?
- The practice phone number listed in the NPPES registry for Collins Sein is (301) 934-8811.
- Does Collins Sein accept Medicare?
- Collins Sein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Collins Sein's NPI active?
- Yes — Collins Sein's NPI (1699769554) is active in the NPPES registry as of the last update on 2018-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.