DR. STEPHEN C. SCHWARTZ M.D.
NPI 1871580092
Internal Medicine - Medical Oncology in Commerce Twp, MI

Active since October 03, 2005PECOS EnrolledAccepts Medicare Assignment
1 WILLIAM CARLS DR, HURON VALLEY SINAI HOSPITAL, COMMERCE TWP, MI 48382(248) 937-5045(248) 937-5819 Get Directions Write a Review

NPPES record last updated: January 6, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jan 6, 2026, Dec 10, 2025, Mar 4, 2022 (3 updates tracked since 2022).

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About Dr. Stephen C. Schwartz M.d. NPPES

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

DR. STEPHEN C. SCHWARTZ M.D. (NPI 1871580092) is a medical oncology provider in Commerce Twp, Michigan, licensed in New Hampshire (33544) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Kootenai Health, and maintains 4 additional practice locations.Information from the official NPPES registry record, last updated January 6, 2026.

NPPES Registry Identity

NPI1871580092
Entity TypeIndividualMale
Provider Legal NameDR. STEPHEN C. SCHWARTZCredential: M.D.
Location Address1 WILLIAM CARLS DR, HURON VALLEY SINAI HOSPITALCommerce Twp, MI 48382
Mailing Address1 William Carls DrCommerce Twp, MI 48382-2201 · (248) 522-0222 · Fax (248) 522-0225
Fax(248) 937-5819
Sole ProprietorNo
Medical School CMSRutgers R W Johnson Medical School (cam/new Bruns/pisc)Graduated 1990
Enumeration DateOctober 3, 2005
Last NPPES UpdateJanuary 6, 2026
NPPES CertifiedJanuary 6, 2026
NPI 1871580092 is a valid, active identifier and passes the ISO check-digit test. How NPI validation works

Primary Specialty

Internal Medicine · Medical Oncology

Taxonomy 207RX0202X · Allopathic & Osteopathic Physicians

Licensed in NH · 33544 Licensed in ID · 8871581 Licensed in MI · 4301065453

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for… Show more

1 WILLIAM CARLS DR, Commerce Twp, MI 48382

Also on File with NPPES

Secondary Locations4
1440 E Mullan Ave
Post Falls, ID 83854-9064
Phone (208) 625-4900 · Fax (208) 625-4911
1 Medical Center Dr
Lebanon, NH 03756-0001
Phone (603) 650-5000
300 North Ave
Battle Creek, MI 49017-3307
Phone (269) 245-8660
834 Sheridan St
Port Townsend, WA 98368-2443
Phone (360) 385-2200
Other Identifiers5
5614279 (Other, MI, Aetna)
1106307451 (Other, Blue Cross Blue Shield Of Michigan)
128957 (Other, MI, Care Choices)
4100087 (Medicaid, MI)
533940001 (Other, MI, Cigna)
Last updated in NPPES on January 6, 2026 · 3 updates tracked since enumeration.

Medicare Participation & PECOS Enrollment Status

Stephen Schwartz is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Stephen Schwartz is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 6800804451

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20251222003811

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 18 times for 15 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 56 times for 39 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 157 times for 75 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

This service was performed 17 times for 17 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

This service was performed 38 times for 38 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $44.34 for a new patient copayment and $25.58 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 48382 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $177.36
  • Minimum New Patient Price $58.04
  • Maximum New Patient Price $177.36
  • Average New Patient Copayment $44.34
  • Minimum New Patient Copayment $14.51
  • Maximum New Patient Copayment $44.34

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $102.35
  • Minimum Established Patient Price $18.32
  • Maximum Established Patient Price $143.49
  • Average Established Patient Copayment $25.58
  • Minimum Established Patient Copayment $4.58
  • Maximum Established Patient Copayment $35.87

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Stephen Schwartz is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
KOOTENAI HEALTH2003 KOOTENAI HEALTH WAY
COEUR D'ALENE, ID 83814
(208) 625-4000Acute Care Hospitals
MARY HITCHCOCK MEMORIAL HOSPITAL1 MEDICAL CENTER DRIVE
LEBANON, NH 03756
(603) 650-5000Acute Care Hospitals
RAPPAHANNOCK GENERAL HOSPITAL101 HARRIS ROAD
KILMARNOCK, VA 22482
(804) 435-8000Critical Access Hospitals

Reviews for DR. STEPHEN C. SCHWARTZ M.D.

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1 WILLIAM CARLS DR
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1 WILLIAM CARLS DR
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Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TOWNSHIP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382
Nurse Anesthetist, Certified Registered
1 WILLIAM CARLS DR
COMMERCE TWP, MI 48382

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1871580092, enumerated as an "individual" on October 03, 2005.

The provider is located at 1 WILLIAM CARLS DR HURON VALLEY SINAI HOSPITAL COMMERCE TWP, MI 48382 and the phone number is (248) 937-5045.

Internal Medicine with taxonomy code 207RX0202X and a focus in Medical Oncology.

The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield, Aetna,. Please consult your insurance carrier or call the provider to verify.

Stephen Schwartz is affiliated with: KOOTENAI HEALTH, MARY HITCHCOCK MEMORIAL HOSPITAL and RAPPAHANNOCK GENERAL HOSPITAL.