DR. WILLIAM JOSEPH RITTINGER JR. D.O.
NPI 1730234618
Anesthesiology in Grand Blanc, MI

Q: What is William Rittinger's NPI number?

The NPI number for William Rittinger is 1730234618. It was assigned to this individual provider in the NPPES registry on January 24, 2007.

Q: What is William Rittinger's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for William Rittinger was last updated on September 26, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.

Active since January 24, 2007PECOS EnrolledAccepts Medicare Assignment

2432 GENESYS PKWY, GRAND BLANC, MI 48439(810) 606-6649 Get Directions Write a Review

NPPES record last updated: September 26, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. William Joseph Rittinger Jr. D.o. NPPES

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

DR. WILLIAM JOSEPH RITTINGER JR. D.O. (NPI 1730234618) is an individual anesthesiology provider in Grand Blanc, Michigan, licensed in Massachusetts (220982) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Ascension Macomb Oakland Hosp-warren Campus, and is a graduate of Michigan State University College Of Osteopathic Medicine (2003).

NPPES Registry Identity

NPI1730234618

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. WILLIAM JOSEPH RITTINGER JR.Credential: D.O.

Location Address2432 GENESYS PKWYGrand Blanc, MI 48439-8069

Mailing Address2432 Genesys PkwyGrand Blanc, MI 48439-8069 · (810) 606-6649 · Fax (810) 606-7245

Phone(810) 606-6649

Sole ProprietorNo

Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2003

Enumeration DateJanuary 24, 2007

Last NPPES UpdateSeptember 26, 2007

✔ NPI 1730234618 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in MA · 220982

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

2432 GENESYS PKWY, Grand Blanc, MI 48439

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health.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

Dr. William Joseph Rittinger Jr. D.o. 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 ID5698863504

PECOS Enrollment IDI20071109000545

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

Medicare enrollment records show William Rittinger reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Insight Anesthesia PLLC

12 mi

Anesthesiology

4800 S SAGINAW ST, SUITE 1840
Flint, MI 48507

Reassigned Medicare billing, Michigan enrollment
16 clinicians in this Medicare group

NPI 1952775975 (810) 732-8336

Jawad A Shah, MD PC

12 mi

Specialist

4800 S SAGINAW ST, STE 1805
Flint, MI 48507

Reassigned Medicare billing, Michigan enrollment
246 clinicians in this Medicare group

NPI 1942402391 (810) 732-8336

Anesthesia Services Associates, PC

20 mi

Anesthesiology

1375 N MAIN ST
Lapeer, MI 48446

Reassigned Medicare billing, Michigan enrollment
145 clinicians in this Medicare group

NPI 1497797153 (248) 301-5989

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 12

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.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

31 services31 patients

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

25 services25 patients

Anesthesia for procedure for total knee joint replacement 01402

Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.

24 services24 patients

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447

This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.

21 services21 patients

Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) 64415

This procedure involves injecting a numbing agent or steroid into your arm's nerve bundle. It's done to manage pain or inflammation. The injection helps block nerve signals that cause discomfort, providing relief. It's a safe, common procedure.

16 services16 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

16 services16 patients

Anesthesia for other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

14 services14 patients

Anesthesia for other procedure on lower leg, ankle, and foot bones 01480

Anesthesia for procedures on lower leg, ankle, and foot bones involves administering medication to block pain and sensation in these areas. This allows doctors to perform necessary treatments or surgeries without causing discomfort. The type of anesthesia used can vary based on the specific procedure.

13 services13 patients

Anesthesia for other procedure on upper abdomen 00790

Anesthesia for an upper abdomen procedure involves using medications to help you feel no pain during the operation. It can be general, where you're unconscious, or regional, where just the abdomen area is numbed. It ensures comfort and stillness, aiding a successful procedure.

11 services11 patients

Anesthesia for exam of colon using an endoscope 00812

Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.

11 services11 patients

Anesthesia for total hip replacement 01214

Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.

11 services11 patients

Anesthesia for x-ray or radiation therapy 01922

Anesthesia for x-ray or radiation therapy involves administering medication to help you relax or sleep during the procedure. It's used to ensure comfort, minimize movement, and reduce anxiety. The type of anesthesia used depends on the procedure and patient's health.

11 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension Macomb Oakland Hosp-Warren Campus

Acute Care Hospitals · Warren, MI

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230195

Location11800 East Twelve Mile RoadWarren, MI 48093 · Macomb County

Emergency services

Ascension Genesys Hospital

Acute Care Hospitals · Grand Blanc, MI

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number230197

LocationOne Genesys ParkwayGrand Blanc, MI 48439 · Genesee County

Emergency services Birthing friendly

Mclaren Macomb

Acute Care Hospitals · Mount Clemens, MI

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number230227

Location1000 Harrington StMount Clemens, MI 48043 · Macomb County

Emergency services Birthing friendly

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KIMBERLY CARPENTER CRNA

Nurse Anesthetist, Certified Registered

2432 GENESYS PKWY
GRAND BLANC, MI 48439

Genesee County (810) 606-6499

KELLY SZELIGA

Nurse Anesthetist, Certified Registered

2432 GENESYS PKWY
GRAND BLANC, MI 48439

Genesee County (810) 606-6499

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 William Rittinger's NPI number?

The NPI number for William Rittinger is 1730234618. It was assigned to this individual provider in the NPPES registry on January 24, 2007.

Where is William Rittinger located?

William Rittinger practices at 2432 Genesys Pkwy, Grand Blanc, MI 48439. The listed phone number is (810) 606-6649.

What is William Rittinger's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is William Rittinger enrolled in Medicare?

Yes. William Rittinger 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 William Rittinger's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Rittinger reassigns Medicare benefits to 3 organizations: Insight Anesthesia PLLC (Flint, MI), Jawad A Shah, MD PC (Flint, MI) and Anesthesia Services Associates, PC (Lapeer, 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 William Rittinger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Rittinger accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list William Rittinger 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.

Is William Rittinger affiliated with any hospitals?

According to CMS data, William Rittinger is affiliated with Ascension Macomb Oakland Hosp-Warren Campus, Ascension Genesys Hospital and Mclaren Macomb.

When was this NPI record last updated?

The NPPES record for William Rittinger was last updated on September 26, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.