Ishmael Jaiyesimi, D.O.
NPI 1538128178 · Hematology & Oncology Physician · Royal Oak, MI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ishmael Jaiyesimi, D.O. is a Hematology & Oncology Physician provider in Royal Oak, MI (NPI 1538128178).
Provider details
- NPI number
- 1538128178
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 5101009654 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
9,960 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,773 | $4 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,718 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,328 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,093 | $126 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 560 | $119 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lenalidomidebrand: Revlimid | 111 | 13 |
| Acalabrutinib Maleatebrand: Calquence | 87 | 11 |
| Anastrozole | 67 | 25 |
| Letrozole | 66 | 24 |
| Acyclovir | 60 | 17 |
| Apixabanbrand: Eliquis | 59 | 21 |
| Oxycodone Hcl | 55 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,097 across 46 records (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
Registry dates
- Enumerated
- 2006-03-22
- Last updated
- 2010-08-27
Frequently asked questions
- What is Ishmael Jaiyesimi's NPI number?
- Ishmael Jaiyesimi's National Provider Identifier (NPI) is 1538128178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ishmael Jaiyesimi's specialty?
- Ishmael Jaiyesimi is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ishmael Jaiyesimi located?
- Ishmael Jaiyesimi's practice location on file with NPPES is 3577 W 13 Mile Rd, Royal Oak, MI 48073-6710.
- What is Ishmael Jaiyesimi's phone number?
- The practice phone number listed in the NPPES registry for Ishmael Jaiyesimi is (248) 551-6991.
- Does Ishmael Jaiyesimi accept Medicare?
- Ishmael Jaiyesimi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ishmael Jaiyesimi's NPI active?
- Yes — Ishmael Jaiyesimi's NPI (1538128178) is active in the NPPES registry as of the last update on 2010-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.