John Blau, MD
NPI 1871757690 · Blood Banking & Transfusion Medicine Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Blau, MD is a Blood Banking & Transfusion Medicine Physician provider in Iowa City, IA (NPI 1871757690).
Provider details
- NPI number
- 1871757690
- Entity type
- Individual
- Primary specialty
- Blood Banking & Transfusion Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD-41958 (IA)
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 tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
68 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) |
|---|---|---|
| Blood Bank Physician Services With Written Report86079 | 36 | $45 |
| Blood Bank Physician Services for Cross Match And/Or Evaluation and Written Report86077 | 21 | $44 |
| Collection of Stem Cells for Transplantation38206 | 11 | $76 |
Typical Medicare-allowed amounts for these services range $44–$76 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$123 across 1 record (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 (1)
- 500 E Market StIowa City, IA 52245-2633Phone: (319) 339-3551Fax: (319) 248-7945
Registry dates
- Enumerated
- 2008-07-10
- Last updated
- 2026-01-20
- Certified
- 2026-01-20
Frequently asked questions
- What is John Blau's NPI number?
- John Blau's National Provider Identifier (NPI) is 1871757690, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Blau's specialty?
- John Blau is listed in the NPPES registry with a primary specialty of Blood Banking & Transfusion Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Blau located?
- John Blau's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is John Blau's phone number?
- The practice phone number listed in the NPPES registry for John Blau is (319) 351-8616.
- Does John Blau accept Medicare?
- John Blau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Blau's NPI active?
- Yes — John Blau's NPI (1871757690) is active in the NPPES registry as of the last update on 2026-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.