What is Michael Olthoff's NPI number?

Michael Olthoff's National Provider Identifier (NPI) is 1134500408, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael Olthoff's specialty?

Michael Olthoff is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).

Where is Michael Olthoff located?

Michael Olthoff's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.

What is Michael Olthoff's phone number?

The practice phone number listed in the NPPES registry for Michael Olthoff is (319) 356-7740.

Does Michael Olthoff accept Medicare?

Michael Olthoff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Michael Olthoff's NPI active?

Yes — Michael Olthoff's NPI (1134500408) is active in the NPPES registry as of the last update on 2025-08-05.

IndividualActiveAccepts Medicare

Michael Olthoff, MD

NPI 1134500408 · Infectious Disease Physician · Iowa City, IA

Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Michael Olthoff, MD is a Infectious Disease Physician provider in Iowa City, IA (NPI 1134500408).

Provider details

NPI number: 1134500408
Entity type: Individual
Primary specialty: Infectious Disease PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: MD-46612 (IA)

Specialties & taxonomies

Infectious Disease PhysicianPrimary207RI0200XLicense MD-46612 (IA)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense MD-46612 (IA)
Allopathic & Osteopathic Physicians
Infectious Disease Physician207RI0200XLicense DR.0070416 (CO)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(76/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
11 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
4 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
1,247 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	546	$117
Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365	420	$64
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	149	$129
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	95	$171
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	25	$78
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.

Drug	Part D claims (2024)
Doxycycline Hyclate	22
Cefadroxil	19
Penicillin V Potassium	19
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	16
Rifampin	13

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.

Practice location

200 Hawkins Dr

Iowa City, IA 52242-1009

Phone: (319) 356-7740

Fax: (319) 356-4600

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Mailing address