John Serlemitsos, MD
NPI 1861405367 · Internal Medicine Physician · Crownsville, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Serlemitsos, MD is a Internal Medicine Physician provider in Crownsville, MD (NPI 1861405367).
Provider details
- NPI number
- 1861405367
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0032654 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
359 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 204 | $128 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 69 | $3 |
| Administration of Influenza Virus VaccineG0008 | 45 | $20 |
| Residence Visit for New Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99344 | 23 | $142 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 18 | $55 |
Typical Medicare-allowed amounts for these services range $3–$142 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 84 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 306 | 38 |
| Amlodipine Besylate | 254 | 28 |
| Levothyroxine Sodium | 139 | 18 |
| Mirtazapine | 123 | 15 |
| Donepezil Hcl | 116 | 13 |
| Memantine Hcl | 114 | 14 |
| Escitalopram Oxalate | 105 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-14
- Last updated
- 2011-10-31
Frequently asked questions
- What is John Serlemitsos's NPI number?
- John Serlemitsos's National Provider Identifier (NPI) is 1861405367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Serlemitsos's specialty?
- John Serlemitsos is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Serlemitsos located?
- John Serlemitsos's practice location on file with NPPES is 2033 Penderbrooke Dr, Crownsville, MD 21032-1918.
- What is John Serlemitsos's phone number?
- The practice phone number listed in the NPPES registry for John Serlemitsos is (443) 790-2689.
- Does John Serlemitsos accept Medicare?
- John Serlemitsos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Serlemitsos's NPI active?
- Yes — John Serlemitsos's NPI (1861405367) is active in the NPPES registry as of the last update on 2011-10-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.