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MARY CHRISTINE MARSHALL M.D.
NPI 1245320589
Family Medicine in Grand Blanc, MI

Active since October 16, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 23D1092142 · Waiver
8195 S SAGINAW ST, GRAND BLANC, MI 48439(810) 695-2210(810) 695-9530 Get Directions Write a Review

NPPES record last updated: August 10, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mary Christine Marshall M.d. NPPES

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

MARY CHRISTINE MARSHALL M.D. (NPI 1245320589) is an individual family medicine provider in Grand Blanc, Michigan, licensed in Michigan (MM070680) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through November 17, 2026, and is affiliated with Ascension Genesys Hospital.

NPPES Registry Identity

NPI1245320589
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMARY CHRISTINE MARSHALLCredential: M.D.
Location Address8195 S SAGINAW STGrand Blanc, MI 48439-1885
Mailing Address8195 S Saginaw StGrand Blanc, MI 48439-1885 · (810) 695-2210 · Fax (810) 695-9530
Phone(810) 695-2210
Fax(810) 695-9530
Sole ProprietorNo
Medical School CMSMichigan State University College Of Human MedicineGraduated 1997
Enumeration DateOctober 16, 2006
Last NPPES UpdateAugust 10, 2011
✔ NPI 1245320589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in MI · MM070680
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
8195 S SAGINAW ST, Grand Blanc, MI 48439
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Other Identifiers 11

Other131834MI · Preferred Choices #
OtherP11144157MI · Multiplan Provider #
Medicaid104238722MI
OtherP11144157MI · Hap Provider Number
Medicare ID-Type Unspecified0N85540MI
Other0988828MA · Healthplus Provider #
OtherC7218MI · Mcare Provider #
Other0802505112MI · Bcbs Provider Number
Other383551198MI · Tax Id
Medicare UPINH14889MI
Other080162382MI · Railroad Mr Provider #

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Christine Marshall 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 ID7113910670
PECOS Enrollment IDI20040412000015
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 23D1092142

Mary Marshall MD PC · Grand Blanc, MI
Active · expires Nov 17, 2026
CLIA Number23D1092142
Laboratory TypePhysician Office
Certificate Effective DateNovember 18, 2024
Certificate Expiration DateNovember 17, 2026
Laboratory DirectorMary C. Marshall
Laboratory Phone(810) 695-2210
Laboratory LocationMary Marshall MD PC9400 S Saginaw Street Suite C, Grand Blanc, MI 48439
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 8

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
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.
103 services59 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
73 services73 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
54 services54 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
37 services26 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
30 services14 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
15 services15 patients

Hospital Affiliations CMS Care Compare

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

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48439 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
$84.74 typical visit price
range $54.34 – $166.68
Typical copayment $21.18 (range $13.58 – $41.67)
Most-billed visit code 99203
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 5

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers14 claims48 services$4.98 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
5 suppliers12 claims16 services$1.14 avg. paid by Medicare
Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351
DME-Orthotic Devices · category DF008N
2 suppliers13 claims1,590 services$1.61 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier12 claims12 services$3.59 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
4 suppliers37 claims37 services$194.82 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 2

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

WILLIAM K LO M.D.
Specialist
8195 S SAGINAW ST
GRAND BLANC, MI 48439
Genesee County (810) 694-5393
MARY MARSHALL, MD, PC
Family Medicine
8195 S SAGINAW ST
GRAND BLANC, MI 48439
Genesee County (810) 695-2210

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 Mary Marshall's NPI number?

The NPI number for Mary Marshall is 1245320589. It was assigned to this individual provider in the NPPES registry on October 16, 2006.

Where is Mary Marshall located?

Mary Marshall practices at 8195 S Saginaw St, Grand Blanc, MI 48439. The listed phone number is (810) 695-2210.

What is Mary Marshall's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mary Marshall enrolled in Medicare?

Yes. Mary Marshall 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.

Does Mary Marshall hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 23D1092142) is associated with this NPI, valid through November 17, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Mary Marshall 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 2 other insurers list Mary Marshall 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 Mary Marshall affiliated with any hospitals?

According to CMS data, Mary Marshall is affiliated with Ascension Genesys Hospital.

When was this NPI record last updated?

The NPPES record for Mary Marshall was last updated on August 10, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.