DR. GREGORY J. DOWNS M.D.
NPI 1982687810
Anesthesiology in Milwaukee, WI
About Dr. Gregory J. Downs M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGORY J. DOWNS M.D. (NPI 1982687810) is an individual anesthesiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (39486-020) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Ascension Columbia St Mary's Hospital Milwaukee, and is a graduate of Medical College Of Wisconsin (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 7
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Gregory J. Downs 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.
Medicare Billing Reassignments
6Medicare enrollment records show Gregory Downs reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- 1,343 clinicians in this Medicare group
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- 210 clinicians in this Medicare group
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
- 25 clinicians in this Medicare group
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Anesthesia Partners Services Sc
- 100 clinicians in this Medicare group
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
Chicago, IL 60657
- Reassigned Medicare billing, Wisconsin enrollment
- 4 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Columbia St Mary's Hospital Milwaukee
Acute Care Hospitals · Milwaukee, WIFroedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, WIMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
MILWAUKEE, WI 53211
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 Gregory Downs's NPI number?
The NPI number for Gregory Downs is 1982687810. It was assigned to this individual provider in the NPPES registry on November 23, 2005.
Where is Gregory Downs located?
Gregory Downs practices at 2323 N Lake Dr, Milwaukee, WI 53211. The listed phone number is (414) 291-1000.
What is Gregory Downs's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gregory Downs enrolled in Medicare?
Yes. Gregory Downs 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.
Which organizations bill Medicare for Gregory Downs's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Downs reassigns Medicare benefits to 6 organizations: Ascension Medical Group-Southeast Wisconsin Inc (Milwaukee, WI), Vituity-Wisconsin Anesthesia Sc (Milwaukee, WI), Columbia St. Mary's Hospital Milwaukee, Inc (Milwaukee, WI), Anesthesia Partners Services, S.C. (Milwaukee, WI), The Medical College Of Wisconsin, Inc. (Milwaukee, WI) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Downs's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Downs accept?
Health plans from Anthem Blue Cross and Blue Shield list Gregory Downs 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 Gregory Downs affiliated with any hospitals?
According to CMS data, Gregory Downs is affiliated with Ascension Columbia St Mary's Hospital Milwaukee and Froedtert Memorial Lutheran Hospital.
When was this NPI record last updated?
The NPPES record for Gregory Downs was last updated on February 14, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Dr. Gregory J. Downs, M.D. · NPI 1982687810
Anesthesiology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since November 23, 2005.
## Identity
- **NPI:** 1982687810 (Entity type: Individual)
- **Enumerated:** November 23, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 39486-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2323 N LAKE DR, Milwaukee, WI 53211-4508
- **Phone:** (414) 291-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Ascension Medical Group-Southeast Wisconsin Inc (NPI 1194473066, Milwaukee, WI); Vituity-Wisconsin Anesthesia Sc (NPI 1598599748, Milwaukee, WI); Columbia St. Mary's Hospital Milwaukee, Inc (NPI 1023064482, Milwaukee, WI); Anesthesia Partners Services, S.C. (NPI 1861810947, Milwaukee, WI); The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1985
## Record status
- **NPPES last updated:** February 14, 2009
- **Other identifiers:** Medicare PIN 0032-01988 (WI); Medicare UPIN E51869 (WI); Medicare PIN 0023-73375 (WI); and 4 more
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Source: [NPI Profile](https://npiprofile.com/npi/1982687810) · Data from the CMS NPPES public registry.