John Szajenko, MD
NPI 1881670362 · Physical Medicine & Rehabilitation Physician · Midland, MI
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Szajenko, MD is a Physical Medicine & Rehabilitation Physician provider in Midland, MI (NPI 1881670362).
Provider details
- NPI number
- 1881670362
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 4301068366 (MI)
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
20 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
813 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 407 | $119 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 107 | $95 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 79 | $91 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 69 | $113 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 37 | $168 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 347 | 58 |
| Gabapentin | 287 | 87 |
| Tramadol Hcl | 148 | 25 |
| Pregabalin | 100 | 21 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 76 | 12 |
| Prednisone | 71 | 44 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Szajenko's NPI number?
- John Szajenko's National Provider Identifier (NPI) is 1881670362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Szajenko's specialty?
- John Szajenko is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is John Szajenko located?
- John Szajenko's practice location on file with NPPES is 555 W Wackerly St, Midland, MI 48640.
- What is John Szajenko's phone number?
- The practice phone number listed in the NPPES registry for John Szajenko is (989) 631-9267.
- Does John Szajenko accept Medicare?
- John Szajenko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Szajenko's NPI active?
- Yes — John Szajenko's NPI (1881670362) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.