What is Michael Garren's NPI number?

Michael Garren's National Provider Identifier (NPI) is 1013971662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael Garren's specialty?

Michael Garren is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).

Where is Michael Garren located?

Michael Garren's practice location on file with NPPES is 1 South Park St, Madison, WI 53715.

What is Michael Garren's phone number?

The practice phone number listed in the NPPES registry for Michael Garren is (608) 287-2100.

Does Michael Garren accept Medicare?

Michael Garren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Michael Garren's NPI active?

Yes — Michael Garren's NPI (1013971662) is active in the NPPES registry as of the last update on 2020-12-30.

IndividualActiveAccepts Medicare

Michael Garren, MD

NPI 1013971662 · Surgery Physician · Madison, WI

Michael Garren, MD is a Surgery Physician provider in Madison, WI (NPI 1013971662).

Provider details

NPI number: 1013971662
Entity type: Individual
Primary specialty: Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 31543 (WI)

Practice location

1 South Park St

Madison, WI 53715

Phone: (608) 287-2100

Fax: (608) 287-2324

Street-level locationGet directions

More WI providers

Mailing address

7974 Uw Health Ct

Middleton, WI 53562-5531

Specialties & taxonomies

Surgery PhysicianPrimary208600000XLicense 31543 (WI)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(74/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
129 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203	47	$75
Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212	35	$33
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	32	$61
Repair of Groin Hernia Using an Endoscope49650	15	$451

Typical Medicare-allowed amounts for these services range $33–$451 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$5,907 across 16 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-04-12
Last updated: 2020-12-30
Certified: 2020-12-30

Frequently asked questions

What is Michael Garren's NPI number?: Michael Garren's National Provider Identifier (NPI) is 1013971662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Michael Garren's specialty?: Michael Garren is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
Where is Michael Garren located?: Michael Garren's practice location on file with NPPES is 1 South Park St, Madison, WI 53715.
What is Michael Garren's phone number?: The practice phone number listed in the NPPES registry for Michael Garren is (608) 287-2100.
Does Michael Garren accept Medicare?: Michael Garren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Michael Garren's NPI active?: Yes — Michael Garren's NPI (1013971662) is active in the NPPES registry as of the last update on 2020-12-30.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203	47	$75
Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212	35	$33
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	32	$61
Repair of Groin Hernia Using an Endoscope49650	15	$451

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$5,907 across 16 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

Transparency — industry payments