Mark Washington, M.D.
NPI 1396079406 · Hospitalist Physician · Gary, IN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Washington, M.D. is a Hospitalist Physician provider in Gary, IN (NPI 1396079406).
Provider details
- NPI number
- 1396079406
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 01071818A (IN)
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 tenure28% of score
16 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
1,636 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 416 | $164 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 413 | $108 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 350 | $112 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 334 | $75 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 54 | $124 |
| Critical Care, First 30-74 Minutes99291 | 48 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 37 | — |
| Levofloxacin | 34 | 34 |
| Prednisone | 23 | 23 |
| Amlodipine Besylate | 19 | 18 |
| Potassium Chloride | 16 | 16 |
| Furosemide | 15 | 14 |
| Metoprolol Tartrate | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-09-22
- Last updated
- 2020-02-18
- Certified
- 2020-02-18
Frequently asked questions
- What is Mark Washington's NPI number?
- Mark Washington's National Provider Identifier (NPI) is 1396079406, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Washington's specialty?
- Mark Washington is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Washington located?
- Mark Washington's practice location on file with NPPES is 600 Grant St, Gary, IN 46402-6001.
- What is Mark Washington's phone number?
- The practice phone number listed in the NPPES registry for Mark Washington is (121) 988-6400.
- Does Mark Washington accept Medicare?
- Mark Washington is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Washington's NPI active?
- Yes — Mark Washington's NPI (1396079406) is active in the NPPES registry as of the last update on 2020-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.