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LAWRENCE J MCMASTER DO
NPI 1316028541
Internal Medicine in Ann Arbor, MI

Active since October 17, 2006Opted out of Medicare · through Nov 1, 2026
2211 OLD EARHART RD STE 195, ANN ARBOR, MI 48105(734) 615-9200(734) 615-9205 Get Directions Write a Review

NPPES record last updated: January 18, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 18, 2021, Dec 17, 2020, Dec 12, 2019 (3 updates tracked since 2019).

About Lawrence J Mcmaster Do NPPES

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

LAWRENCE J MCMASTER DO (NPI 1316028541) is an individual internal medicine provider in Ann Arbor, Michigan, licensed in Michigan (5101011410) and active in the NPI registry since October 2006. He has opted out of Medicare through November 1, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1316028541
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameLAWRENCE J MCMASTERCredential: DO
Location Address2211 OLD EARHART RD STE 195Ann Arbor, MI 48105-2963
Mailing Address3621 S State StAnn Arbor, MI 48108-1633 · (734) 647-5299
Phone(734) 615-9200
Fax(734) 615-9205
Sole ProprietorNo
Enumeration DateOctober 17, 2006
Last NPPES UpdateJanuary 18, 20213 updates tracked since enumeration
NPPES CertifiedJanuary 18, 2021
✔ NPI 1316028541 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 5101011410
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.
2211 OLD EARHART RD STE 195, Ann Arbor, MI 48105
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Other Identifiers 1

Medicaid1316028541MI

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

Lawrence J Mcmaster Do 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 November 1, 2020 through November 1, 2026.

Opt-Out Effective DateNovember 1, 2020
Opt-Out In Effect ThroughNovember 1, 2026Opt-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 48105 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
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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 8

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
3 suppliers11 claims34 services$5.93 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
4 suppliers11 claims59 services$12.00 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
5 suppliers17 claims17 services$42.99 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
5 suppliers14 claims14 services$13.32 avg. paid by Medicare
Tubing used with positive airway pressure device A7037
DME-Other DME · category DE001N
5 suppliers17 claims17 services$10.26 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
6 suppliers25 claims147 services$1.50 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.

MS. MONICA M DIMAGNO MD
Internal Medicine
2211 OLD EARHART RD STE 195
ANN ARBOR, MI 48105
Washtenaw County (734) 615-9200
DAVID R STUTZ MD
Internal Medicine (Geriatric Medicine)
2211 OLD EARHART RD STE 195
ANN ARBOR, MI 48105
Washtenaw County (734) 615-9200

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 Lawrence Mcmaster's NPI number?

The NPI number for Lawrence Mcmaster is 1316028541. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is Lawrence Mcmaster located?

Lawrence Mcmaster practices at 2211 Old Earhart Rd Ste 195, Ann Arbor, MI 48105. The listed phone number is (734) 615-9200.

What is Lawrence Mcmaster's specialty?

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

Is Lawrence Mcmaster enrolled in Medicare?

No. Lawrence Mcmaster has opted out of Medicare through November 1, 2026. 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 Lawrence Mcmaster was last updated on January 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.