Stephen Mihalcik, M.D., PH.D.
NPI 1598031205 · Radiation Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Mihalcik, M.D., PH.D. is a Radiation Oncology Physician provider in Boston, MA (NPI 1598031205).
Provider details
- NPI number
- 1598031205
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 261508 (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 tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,256 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) |
|---|---|---|
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 1,211 | $23 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 216 | $96 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 129 | $135 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 124 | $202 |
| Tissue Marker, Implantable, Any Type, EachA4648 | 114 | $147 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 57 | 25 |
| Ciprofloxacin Hcl | 18 | 18 |
| Clindamycin Hcl | 12 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$290 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 (3)
- 100 Blossom StBoston, MA 02114-2606Phone: (617) 724-1548
- 55 Fruit StBoston, MA 02114-2696Phone: (617) 726-7646
- 131 Old Road to 9 Acre CorConcord, MA 01742-4181Phone: (978) 287-3436
Registry dates
- Enumerated
- 2012-03-27
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Stephen Mihalcik's NPI number?
- Stephen Mihalcik's National Provider Identifier (NPI) is 1598031205, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Mihalcik's specialty?
- Stephen Mihalcik is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Mihalcik located?
- Stephen Mihalcik's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Stephen Mihalcik's phone number?
- The practice phone number listed in the NPPES registry for Stephen Mihalcik is (617) 732-6310.
- Does Stephen Mihalcik accept Medicare?
- Stephen Mihalcik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Mihalcik's NPI active?
- Yes — Stephen Mihalcik's NPI (1598031205) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.