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DR. STEPHEN ANDREW ANTONUCCI M.D.
NPI 1124331426
Hospitalist in Plymouth, MI

Active since July 15, 2010PECOS EnrolledAccepts Medicare Assignment
46347 ACADEMY DR, PLYMOUTH, MI 48170(734) 330-4321 Get Directions Write a Review

NPPES record last updated: April 21, 2017. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Stephen Andrew Antonucci M.d. NPPES

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

DR. STEPHEN ANDREW ANTONUCCI M.D. (NPI 1124331426) is an individual hospitalist provider in Plymouth, Michigan, licensed in California (A143234) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS and is a graduate of Albany Medical College Of Union University (2010).

NPPES Registry Identity

NPI1124331426
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. STEPHEN ANDREW ANTONUCCICredential: M.D.
Location Address46347 ACADEMY DRPlymouth, MI 48170-3519
Mailing AddressPo Box 232410San Diego, CA 92193-2410 · (858) 249-6748 · Fax (619) 543-3183
Phone(734) 330-4321
Sole ProprietorYes
Medical School CMSAlbany Medical College Of Union UniversityGraduated 2010
Enumeration DateJuly 15, 2010
Last NPPES UpdateApril 21, 2017
✔ NPI 1124331426 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in CA · A143234
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 A143234 (CA)
46347 ACADEMY DR, Plymouth, MI 48170
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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

Dr. Stephen Andrew Antonucci M.d. 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 ID8325275894
PECOS Enrollment IDI20170512001598
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 Reassignment

Medicare enrollment records show Stephen Antonucci reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The University Of California - Ucsd Medical Group
1,948 mi
Gastroenterology
200 W ARBOR DR
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Regents Of The University Of California
  • 1,051 clinicians in this Medicare group
NPI 1336267137 (800) 926-8273

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 7

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.
282 services102 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
98 services61 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
47 services32 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
35 services35 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.
28 services28 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
27 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48170 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers18 claims18 services$14.31 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers18 claims18 services$62.35 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Stephen Antonucci's NPI number?

The NPI number for Stephen Antonucci is 1124331426. It was assigned to this individual provider in the NPPES registry on July 15, 2010.

Where is Stephen Antonucci located?

Stephen Antonucci practices at 46347 Academy Dr, Plymouth, MI 48170. The listed phone number is (734) 330-4321.

What is Stephen Antonucci's specialty?

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

Is Stephen Antonucci enrolled in Medicare?

Yes. Stephen Antonucci 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 organization bills Medicare for Stephen Antonucci's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Antonucci reassigns Medicare benefits to Regents Of The University Of California - Ucsd Medical Group (San Diego, CA). The 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 Stephen Antonucci's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Stephen Antonucci was last updated on April 21, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.