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NICHOLAS JOHN CRETU MD
NPI 1689611188
Hospitalist in Detroit, MI

Active since June 01, 2006PECOS EnrolledAccepts Medicare Assignment
4201 ST ANTOINE STE 5C, DETROIT, MI 48201(313) 745-7999(313) 966-6400 Get Directions Write a Review

NPPES record last updated: March 17, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 17, 2018, Jun 15, 2017, Sep 14, 2016 (3 updates tracked since 2016).

About Nicholas John Cretu Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NICHOLAS JOHN CRETU MD (NPI 1689611188) is an individual hospitalist provider in Detroit, Michigan, licensed in Michigan (4301059641) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Detroit, and is a graduate of Other (1987).

NPPES Registry Identity

NPI1689611188
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameNICHOLAS JOHN CRETUCredential: MD
Location Address4201 ST ANTOINE STE 5CDetroit, MI 48201-2153
Mailing Address1560 E Maple Rd, Suite 400-credentialingTroy, MI 48083-1135 · (313) 577-5030 · Fax (313) 745-4707
Phone(313) 745-7999
Fax(313) 966-6400
Sole ProprietorNo
Medical School CMSOtherGraduated 1987
Enumeration DateJune 1, 2006
Last NPPES UpdateMarch 17, 20183 updates tracked since enumeration
✔ NPI 1689611188 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in MI · 4301059641
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License 4301059641 (MI)
4201 ST ANTOINE STE 5C, Detroit, MI 48201
Open in Google Maps ↗

Secondary Practice Location 1

Location 13990 John R StDetroit, MI 48201-2018 · Phone (313) 745-4525 · Fax (313) 966-7146

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nicholas John Cretu Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476565722
PECOS Enrollment IDI20060703000108
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Nicholas Cretu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Physician Group
Same address
Advanced Practice Midwife
4201 SAINT ANTOINE ST, SUITE 4E&F
Detroit, MI 48201
  • Reassigned Medicare billing, Michigan enrollment
  • 731 clinicians in this Medicare group
NPI 1437198231 (313) 745-4380
Michigan Emergency Services
0.1 mi
Medical Toxicology
4201 SAINT ANTOINE ST, SUITE 3R
Detroit, MI 48201
  • Reassigned Medicare billing, Michigan enrollment
  • 83 clinicians in this Medicare group
NPI 1316968191 (313) 745-3330

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
296 services37 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
24 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nicholas Cretu's NPI number?

The NPI number for Nicholas Cretu is 1689611188. It was assigned to this individual provider in the NPPES registry on June 1, 2006.

Where is Nicholas Cretu located?

Nicholas Cretu practices at 4201 St Antoine Ste 5C, Detroit, MI 48201. The listed phone number is (313) 745-7999.

What is Nicholas Cretu's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Nicholas Cretu enrolled in Medicare?

Yes. Nicholas Cretu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Nicholas Cretu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Cretu reassigns Medicare benefits to 2 organizations: University Physician Group (Detroit, MI) and Michigan Emergency Services (Detroit, MI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Cretu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Cretu accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Nicholas Cretu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Nicholas Cretu was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.