Jonathan Tiemann, DO
NPI 1437732708 · Emergency Medicine Physician · Saint Joseph, MI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Tiemann, DO is a Emergency Medicine Physician provider in Saint Joseph, MI (NPI 1437732708).
Provider details
- NPI number
- 1437732708
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 81595-21 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
67 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 39 | $170 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 28 | $114 |
Typical Medicare-allowed amounts for these services range $114–$170 (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.
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 |
|---|---|---|
| Cephalexin | 27 | 27 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 23 | 23 |
| Prednisone | 22 | 22 |
| Atorvastatin Calcium | 19 | — |
| Naproxen | 13 | 13 |
| Amlodipine Besylate | 12 | — |
| Methocarbamol | 11 |
Practice location
Mailing address
Additional practice locations (4)
- 875 S Route 31Crystal Lake, IL 60014Phone: (779) 220-5500Fax: (779) 220-5184
- 1045 W Stephenson StFreeport, IL 61032-4864Phone: (815) 599-6000Fax: (815) 599-7974
- 8201 E Riverside BlvdRockford, IL 61114-2300Phone: (815) 971-7000Fax: (815) 968-4795
- 1000 Mineral Point AveJanesville, WI 53548-2982Phone: (608) 756-6868Fax: (608) 756-6289
Registry dates
- Enumerated
- 2021-05-04
- Last updated
- 2026-04-08
- Certified
- 2026-04-08
Frequently asked questions
- What is Jonathan Tiemann's NPI number?
- Jonathan Tiemann's National Provider Identifier (NPI) is 1437732708, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Tiemann's specialty?
- Jonathan Tiemann is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Tiemann located?
- Jonathan Tiemann's practice location on file with NPPES is 1234 Napier Ave, Saint Joseph, MI 49085-2112.
- What is Jonathan Tiemann's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Tiemann is (269) 983-8300.
- Does Jonathan Tiemann accept Medicare?
- Jonathan Tiemann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Tiemann's NPI active?
- Yes — Jonathan Tiemann's NPI (1437732708) is active in the NPPES registry as of the last update on 2026-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.