Demetri Tsiolkas
NPI 1194301812 · Internal Medicine Physician · Glen Burnie, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Demetri Tsiolkas is a Internal Medicine Physician provider in Glen Burnie, MD (NPI 1194301812).
Provider details
- NPI number
- 1194301812
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- H0101140 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
5 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
271 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 176 | $119 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 53 | $117 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 42 | $81 |
Typical Medicare-allowed amounts for these services range $81–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$36 across 2 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 (1)
- 3700 S Main StBlacksburg, VA 24060-7017Phone: (540) 951-1111
Registry dates
- Enumerated
- 2021-03-23
- Last updated
- 2024-07-26
- Certified
- 2024-07-26
Frequently asked questions
- What is Demetri Tsiolkas's NPI number?
- Demetri Tsiolkas's National Provider Identifier (NPI) is 1194301812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Demetri Tsiolkas's specialty?
- Demetri Tsiolkas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Demetri Tsiolkas located?
- Demetri Tsiolkas's practice location on file with NPPES is 301 Hospital Dr, Glen Burnie, MD 21061-5803.
- What is Demetri Tsiolkas's phone number?
- The practice phone number listed in the NPPES registry for Demetri Tsiolkas is (410) 787-4000.
- Does Demetri Tsiolkas accept Medicare?
- Demetri Tsiolkas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Demetri Tsiolkas's NPI active?
- Yes — Demetri Tsiolkas's NPI (1194301812) is active in the NPPES registry as of the last update on 2024-07-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.