Theodoros Karantanos
NPI 1982023388 · Medical Oncology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theodoros Karantanos is a Medical Oncology Physician provider in Baltimore, MD (NPI 1982023388).
Provider details
- NPI number
- 1982023388
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 273620 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
238 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 176 | $120 |
| Bone Marrow, Smear Interpretation85097 | 44 | $48 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 18 | $168 |
Typical Medicare-allowed amounts for these services range $48–$168 (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.
Practice location
Mailing address
Additional practice locations (2)
- 72 E Newton St # 124Boston, MA 02118-2308Phone: (617) 638-7253
- 840 Harrison AvenueApt 1706Boston, MA 02118Phone: (617) 638-8000
Registry dates
- Enumerated
- 2014-04-14
- Last updated
- 2022-06-01
- Certified
- 2022-06-01
Frequently asked questions
- What is Theodoros Karantanos's NPI number?
- Theodoros Karantanos's National Provider Identifier (NPI) is 1982023388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodoros Karantanos's specialty?
- Theodoros Karantanos is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Theodoros Karantanos located?
- Theodoros Karantanos's practice location on file with NPPES is 201 N Broadway St, Baltimore, MD 21287-0031.
- What is Theodoros Karantanos's phone number?
- The practice phone number listed in the NPPES registry for Theodoros Karantanos is (410) 955-8893.
- Does Theodoros Karantanos accept Medicare?
- Theodoros Karantanos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theodoros Karantanos's NPI active?
- Yes — Theodoros Karantanos's NPI (1982023388) is active in the NPPES registry as of the last update on 2022-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.