Marissa O'Keeffe, MD
NPI 1689133597 · Nephrology Physician · Brooklyn Center, MN
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa O'Keeffe, MD is a Nephrology Physician provider in Brooklyn Center, MN (NPI 1689133597).
Provider details
- NPI number
- 1689133597
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
381 Medicare services, 2024 (ranked within specialty)
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 227 | $74 |
| Hemodialysis Procedure With Physician Evaluation90935 | 59 | $67 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 55 | $123 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 24 | $112 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $164 |
Typical Medicare-allowed amounts for these services range $67–$164 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Practice location
Mailing address
Additional practice locations (1)
- 13001 E 17th PlAurora, CO 80045-2570Phone: (303) 724-1792
Registry dates
- Enumerated
- 2019-03-19
- Last updated
- 2024-08-14
- Certified
- 2024-08-14
Frequently asked questions
- What is Marissa O'Keeffe's NPI number?
- Marissa O'Keeffe's National Provider Identifier (NPI) is 1689133597, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa O'Keeffe's specialty?
- Marissa O'Keeffe is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa O'Keeffe located?
- Marissa O'Keeffe's practice location on file with NPPES is 6200 Shingle Creek Pkwy Ste 250, Brooklyn Center, MN 55430-2107.
- What is Marissa O'Keeffe's phone number?
- The practice phone number listed in the NPPES registry for Marissa O'Keeffe is (763) 544-0696.
- Does Marissa O'Keeffe accept Medicare?
- Marissa O'Keeffe is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa O'Keeffe's NPI active?
- Yes — Marissa O'Keeffe's NPI (1689133597) is active in the NPPES registry as of the last update on 2024-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.