What is Celalettin Ustun's NPI number?

Celalettin Ustun's National Provider Identifier (NPI) is 1013010487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Celalettin Ustun's specialty?

Celalettin Ustun is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).

Where is Celalettin Ustun located?

Celalettin Ustun's practice location on file with NPPES is 1725 W Harrison St Ste 1010, Chicago, IL 60612.

What is Celalettin Ustun's phone number?

The practice phone number listed in the NPPES registry for Celalettin Ustun is (312) 942-5904.

Does Celalettin Ustun accept Medicare?

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

Is Celalettin Ustun's NPI active?

Yes — Celalettin Ustun's NPI (1013010487) is active in the NPPES registry as of the last update on 2018-09-21.

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Celalettin Ustun, MD

NPI 1013010487 · Hematology (Internal Medicine) Physician · Chicago, IL

Celalettin Ustun, MD is a Hematology (Internal Medicine) Physician provider in Chicago, IL (NPI 1013010487).

Provider details

NPI number: 1013010487
Entity type: Individual
Primary specialty: Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 036-147386 (IL)

Practice location

1725 W Harrison St Ste 1010

Chicago, IL 60612

Phone: (312) 942-5904

Fax: (312) 942-3194

Street-level locationGet directions

More IL providers

Mailing address

1725 W Harrison St Ste 1010

Chicago, IL 60612-3841

Specialties & taxonomies

Hematology (Internal Medicine) PhysicianPrimary207RH0000XLicense 036-147386 (IL)
Allopathic & Osteopathic Physicians

Additional practice locations (1)

516 Delaware Street Se
Ump Bmt Clinic
Minneapolis, MN 55455
Phone: (612) 884-0649

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

Profile Score

Detailed profile(78/100 index)

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
2 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
257 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 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	141	$98
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	52	$144
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	48	$123
Hospital Discharge Day Management, More Than 30 Minutes99239	16	$118

Typical Medicare-allowed amounts for these services range $98–$144 (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 · 9 distinct drugs on file.

Drug	Part D claims (2024)
Prednisone	45
Fluconazole	28
Carvedilol	26
Acyclovir	24
Avapritinibbrand: Ayvakit	22
Pantoprazole Sodium	21
Sirolimus	14
Lenalidomidebrand: Revlimid	12
Ursodiol	12

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include 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 , 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.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$23,001 across 21 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.

Enumerated: 2006-09-07
Last updated: 2018-09-21

Frequently asked questions

What is Celalettin Ustun's NPI number?: Celalettin Ustun's National Provider Identifier (NPI) is 1013010487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Celalettin Ustun's specialty?: Celalettin Ustun is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
Where is Celalettin Ustun located?: Celalettin Ustun's practice location on file with NPPES is 1725 W Harrison St Ste 1010, Chicago, IL 60612.
What is Celalettin Ustun's phone number?: The practice phone number listed in the NPPES registry for Celalettin Ustun is (312) 942-5904.
Does Celalettin Ustun accept Medicare?: Celalettin Ustun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Celalettin Ustun's NPI active?: Yes — Celalettin Ustun's NPI (1013010487) is active in the NPPES registry as of the last update on 2018-09-21.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

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	141	$98
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	52	$144
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	48	$123
Hospital Discharge Day Management, More Than 30 Minutes99239	16	$118

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.

Drug	Part D claims (2024)
Prednisone	45
Fluconazole	28
Carvedilol	26
Acyclovir	24
Avapritinibbrand: Ayvakit	22
Pantoprazole Sodium	21
Sirolimus	14
Lenalidomidebrand: Revlimid	12
Ursodiol	12

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$23,001 across 21 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments