JAMES J GREENBERG M.D.
NPI 1164412136
Surgery in Lake Geneva, WI

Active since October 21, 2005PECOS EnrolledAccepts Medicare Assignment
N2950 STATE ROAD 67, LAKE GENEVA, WI 53147(262) 245-0535 Get Directions Write a Review

NPPES record last updated: September 29, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About James J Greenberg M.d. NPPES

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

JAMES J GREENBERG M.D. (NPI 1164412136) is an individual surgery provider in Lake Geneva, Wisconsin, licensed in Wisconsin (53948) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Mercy Harvard Hospital, and is a graduate of University Of Missouri, Kansas City, School Of Medicine (1991).

NPPES Registry Identity

NPI1164412136
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameJAMES J GREENBERGCredential: M.D.
Location AddressN2950 STATE ROAD 67Lake Geneva, WI 53147-2655
Mailing AddressN2950 State Road 67Lake Geneva, WI 53147-2655 · (262) 245-0535
Sole ProprietorNo
Medical School CMSUniversity Of Missouri, Kansas City, School Of MedicineGraduated 1991
Enumeration DateOctober 21, 2005
Last NPPES UpdateSeptember 29, 2011
NPI 1164412136 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Licenses Licensed in WI · 53948 Licensed in IL · 036-087181
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
N2950 STATE ROAD 67, Lake Geneva, WI 53147

Other Identifiers 12

Medicare PINCI2940IL
Medicare PIN517410IL
Medicare UPING28539IL
Medicare PIN020040377IL
Medicaid036087181IL
Medicare PIN212474IL
Medicare PINK22630IL
OtherGREENJAMWI · Mercycare Insurance
Medicare PINL78449IL
Medicare PIN541760708WI
Other01619787Bcbsil Group Number
Medicare PIN214660034IL

Accepted 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

James J Greenberg 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 ID7113946443
PECOS Enrollment IDI20051116000511, I20100623000058
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.

Areas of Expertise CMS Part B claims 2

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.
26 services17 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.
20 services20 patients

Hospital Affiliations CMS Care Compare 3

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

Mercy Harvard Hospital

Critical Access Hospitals · Harvard, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number141335
Location901 S Grant StreetHarvard, IL 60033 · Mc Henry County
Emergency services

Mercy Health System Corp

Acute Care Hospitals · Janesville, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520066
Location1000 Mineral Point AveJanesville, WI 53548 · Rock County
Emergency services Birthing friendly

Mercy Walworth Hospital & Medical Center

Critical Access Hospitals · Lake Geneva, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number521357
LocationN2950 State Road 67Lake Geneva, WI 53147 · Walworth County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53147 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
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 20

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

Counselor (Professional)
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Emergency Medicine
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Occupational Therapist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Podiatrist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Physical Therapist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Pharmacist
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Emergency Medicine
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147
Physician Assistant
N2950 STATE ROAD 67
LAKE GENEVA, WI 53147

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 James Greenberg's NPI number?

The NPI number for James Greenberg is 1164412136. It was assigned to this individual provider in the NPPES registry on October 21, 2005.

Where is James Greenberg located?

James Greenberg practices at N2950 State Road 67, Lake Geneva, WI 53147. The listed phone number is (262) 245-0535.

What is James Greenberg's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is James Greenberg enrolled in Medicare?

Yes. James Greenberg 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.

What insurance does James Greenberg accept?

Health plans from Anthem Blue Cross and Blue Shield and MercyCare Health Plans list James Greenberg 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 James Greenberg affiliated with any hospitals?

According to CMS data, James Greenberg is affiliated with Mercy Harvard Hospital, Mercy Health System Corp and Mercy Walworth Hospital & Medical Center.

When was this NPI record last updated?

The NPPES record for James Greenberg was last updated on September 29, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.