Quick answers
- Which hospitals does David W. Grambow work at?
- Medicare's official clinician data lists David W. Grambow at 5 hospitals: Ascension All Saints Hospital, Ascension Columbia St Marys Hospital Milwaukee, Ascension SE Wisconsin Hospital, Ascension St Francis Hospital and Orthopaedic Hospital of Wisconsin. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David W. Grambow see patients?
- Medicare's clinician data lists 11 practice locations, including Milwaukee, WI, Franklin, WI and Mequon, WI. Call before your visit to confirm the address.
- What is David W. Grambow's specialty?
- Medicare lists Interventional Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does David W. Grambow accept Medicare assignment?
- Yes. Medicare's clinician data says David W. Grambow accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for David W. Grambow?
- (414) 765-0606, as listed in official Medicare / NPI Registry data.
- What is David W. Grambow's NPI number?
- 1235178674. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David W. Grambow works
Medicare's Facility Affiliation Data lists David W. Grambow at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension All Saints HospitalRacine, WI · Acute Care Hospital · CCN 520096
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · CCN 520051
- Ascension SE Wisconsin HospitalMilwaukee, WI · Acute Care Hospital · CCN 520136
- Ascension St Francis HospitalMilwaukee, WI · Acute Care Hospital · CCN 520078
- Orthopaedic Hospital of WisconsinGlendale, WI · Acute Care Hospital · CCN 520194
Practice locations
Addresses where David W. Grambow is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 11; the Medicare profile lists all.
- 1004 N 10th StMilwaukee, WI 53233 (414) 765‑0606
- 10101 S 27th StFranklin, WI 53132 (414) 325‑4700
- 13111 N Port Washington RdMequon, WI 53097 (262) 243‑7300
- 13133 N Port Washington Rd, Suite G06Mequon, WI 53097 (262) 243‑8371
- 2301 N Lake DrMilwaukee, WI 53211
Group practices
Medicare enrollment lists David W. Grambow as a member of these groups (CMS data updated 2026-10-02).
- Columbia St Marys Hospital Milwaukee Inc306 clinicians in the group
- Outreach Community Health Centers Inc53 clinicians in the group
Specialties
Other interventional cardiologists in Milwaukee
Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Vanderbilt University School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235178674 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians