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DR. MICHAEL JACK GROSSMAN M.D.
NPI 1942367008
Family Medicine in Lake Forest, CA

Active since January 01, 2007Opted out of Medicare · through Apr 7, 2027
24432 MUIRLANDS BLVD, SUITE 111, LAKE FOREST, CA 92630(949) 770-7301(949) 770-0634 Get Directions Write a Review

NPPES record last updated: March 27, 2008. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Michael Jack Grossman M.d. NPPES

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

DR. MICHAEL JACK GROSSMAN M.D. (NPI 1942367008) is an individual family medicine provider in Lake Forest, California, licensed in California (G33405) and active in the NPI registry since January 2007. He has opted out of Medicare through April 7, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1942367008
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. MICHAEL JACK GROSSMANCredential: M.D.
Location Address24432 MUIRLANDS BLVD, SUITE 111Lake Forest, CA 92630-3939
Mailing Address24432 Muirlands Blvd, Suite 111Lake Forest, CA 92630-3939 · (949) 770-7501
Phone(949) 770-7301
Fax(949) 770-0634
Sole ProprietorYes
Enumeration DateJanuary 1, 2007
Last NPPES UpdateMarch 27, 2008
✔ NPI 1942367008 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · G33405
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.
24432 MUIRLANDS BLVD, Lake Forest, CA 92630
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Other Identifiers 1

OtherG33405CA · Medical License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Michael Jack Grossman M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 7, 2025 through April 7, 2027.

Opt-Out Effective DateApril 7, 2025
Opt-Out In Effect ThroughApril 7, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92630 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Other Providers at the Same Location NPPES 7

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

AZIN MESHKINPOUR M.D., M.P.H.
Dermatology
24432 MUIRLANDS BLVD, SUITE 219
LAKE FOREST, CA 92630
Orange County (949) 770-8115
DARREN TERRY D.P.T.
Physical Therapist
24432 MUIRLANDS BLVD, STE. 201
LAKE FOREST, CA 92630
Orange County (949) 540-0301
INLAND PSYCHIATRIC MEDICAL GROUP, INC.
Psychiatry & Neurology (Psychiatry)
24432 MUIRLANDS BLVD, SUTIE 131
LAKE FOREST, CA 92630
Orange County (949) 582-5532
JAMES L. KAY, D.O., P.C.
Clinic/Center (Primary Care)
24432 MUIRLANDS BLVD, SUITE 111
LAKE FOREST, CA 92630
Orange County (949) 364-2229
DR. ANTHONY ERNEST FOLLICO DDS
Dentist
24432 MUIRLANDS BLVD, SUITE 211
LAKE FOREST, CA 92630
Orange County (949) 770-7007
DR. JOHN SANDS BRIZENDINE DDS
Dentist (General Practice)
24432 MUIRLANDS BLVD, SUITE #209
LAKE FOREST, CA 92630
Orange County (949) 770-9323
DR. JAMES LEON KAY D.O.
Pediatrics
24432 MUIRLANDS BLVD, SUITE 111
LAKE FOREST, CA 92630
Orange County (949) 364-2229

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 Michael Grossman's NPI number?

The NPI number for Michael Grossman is 1942367008. It was assigned to this individual provider in the NPPES registry on January 1, 2007.

Where is Michael Grossman located?

Michael Grossman practices at 24432 Muirlands Blvd Suite 111, Lake Forest, CA 92630. The listed phone number is (949) 770-7301.

What is Michael Grossman's specialty?

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

Is Michael Grossman enrolled in Medicare?

No. Michael Grossman has opted out of Medicare through April 7, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Michael Grossman was last updated on March 27, 2008. NPI Profile syncs with the weekly NPPES data releases published by CMS.