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DR. JENNIFER MICHELLE WOLLACK D.O.
NPI 1265880140
Internal Medicine in Lansing, MI

Active since June 01, 2016PECOS EnrolledAccepts Medicare Assignment
3955 PATIENT CARE DR, LANSING, MI 48911(517) 374-7600(885) 480-9150 Get Directions Write a Review

NPPES record last updated: March 24, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 24, 2025, Feb 10, 2020, Nov 4, 2019 and 2 more (5 updates tracked since 2017).

About Dr. Jennifer Michelle Wollack D.o. NPPES

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

DR. JENNIFER MICHELLE WOLLACK D.O. (NPI 1265880140) is an individual internal medicine provider in Lansing, Michigan, licensed in Michigan (5101022728) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS, is affiliated with Mclaren Greater Lansing, and maintains a secondary practice location in Detroit.

NPPES Registry Identity

NPI1265880140
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. JENNIFER MICHELLE WOLLACKCredential: D.O.
Location Address3955 PATIENT CARE DRLansing, MI 48911-4299
Mailing Address3955 Patient Care DrLansing, MI 48911-4299 · (517) 374-7600 · Fax (885) 480-9150
Phone(517) 374-7600
Fax(885) 480-9150
Sole ProprietorYes
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2016
Enumeration DateJune 1, 2016
Last NPPES UpdateMarch 24, 20255 updates tracked since enumeration
NPPES CertifiedMarch 24, 2025
✔ NPI 1265880140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 5101022728
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
3955 PATIENT CARE DR, Lansing, MI 48911
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Other Names 1

Former Name (1)Jennifer Michelle Kreza

Secondary Practice Location 1

Location 13031 W Grand Blvd Ste 450Detroit, MI 48202-3026 · Phone (248) 225-0423

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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. Jennifer Michelle Wollack 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 ID9032446190
PECOS Enrollment IDI20190812003615
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 Jennifer Wollack reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Capital Internal Medicine Associates P.C.
Same address
Internal Medicine
3955 PATIENT CARE WAY, SUITE A
Lansing, MI 48911
  • Reassigned Medicare billing, Michigan enrollment
  • 108 clinicians in this Medicare group
NPI 1780629832 (517) 374-7600
Eaton Rapids Medical Center
15 mi
Critical Access
1500 S MAIN ST
Eaton Rapids, MI 48827
  • Reassigned Medicare billing, Michigan enrollment
  • 54 clinicians in this Medicare group
NPI 1417044660 (517) 663-2671

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 6

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.
484 services185 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
122 services116 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.
75 services42 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.
46 services45 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.
42 services42 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.
41 services40 patients

Hospital Affiliations CMS Care Compare 3

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

Mclaren Greater Lansing

Acute Care Hospitals · Lansing, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230167
Location2900 Collins RdLansing, MI 48910 · Ingham County
Emergency services Birthing friendly

Edward W Sparrow Hospital

Acute Care Hospitals · Lansing, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number230230
Location1215 E Michigan AvenueLansing, MI 48912 · Ingham County
Emergency services Birthing friendly

Eaton Rapids Medical Center

Critical Access Hospitals · Eaton Rapids, MI
OwnershipVoluntary non-profit - Private
CMS Certification Number231324
Location1500 S Main StreetEaton Rapids, MI 48827 · Eaton County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48911 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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 3

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

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
2 suppliers12 claims12 services$40.31 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers11 claims11 services$9.67 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
6 suppliers17 claims18 services$66.07 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 9

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

DR. SHERMAN GORBIS D.O.
Neuromusculoskeletal Medicine & OMM
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 374-7600
MS. KATIE ANN SIKES NP
Nurse Practitioner
3955 PATIENT CARE DR, SUITE B
LANSING, MI 48911
Ingham County (517) 882-6643
EATON RAPIDS MEDICAL CENTER
Neurological Surgery
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 663-9403
WASHTENAW MEDICAL PHARMACY LLC
Pharmacy (Community/Retail Pharmacy)
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 393-1000
WHITNEY ALLISON HOUNSHELL D.O.
Internal Medicine
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 374-7600
MRS. JENNIFER YIRSA WESTON PA
Physician Assistant
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 374-7600
DR. BASIL DAHBUR DO
Internal Medicine (Cardiovascular Disease)
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 374-7600
MRS. MELINDA S VANDYKE
Nurse Practitioner (Family)
3955 PATIENT CARE DR
LANSING, MI 48911
Ingham County (517) 374-7600

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 Jennifer Wollack's NPI number?

The NPI number for Jennifer Wollack is 1265880140. It was assigned to this individual provider in the NPPES registry on June 1, 2016. The provider is also known as Jennifer Michelle Kreza.

Where is Jennifer Wollack located?

Jennifer Wollack practices at 3955 Patient Care Dr, Lansing, MI 48911. The listed phone number is (517) 374-7600.

What is Jennifer Wollack's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Jennifer Wollack enrolled in Medicare?

Yes. Jennifer Wollack 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 Jennifer Wollack's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Wollack reassigns Medicare benefits to 2 organizations: Capital Internal Medicine Associates P.C. (Lansing, MI) and Eaton Rapids Medical Center (Eaton Rapids, 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 Jennifer Wollack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jennifer Wollack accept?

Health plans from Priority Health list Jennifer Wollack 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 Jennifer Wollack affiliated with any hospitals?

According to CMS data, Jennifer Wollack is affiliated with Mclaren Greater Lansing, Edward W Sparrow Hospital and Eaton Rapids Medical Center.

When was this NPI record last updated?

The NPPES record for Jennifer Wollack was last updated on March 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.