Mary Grenz, RD
NPI 1467835736 · Registered Dietitian · Erie, PA
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Grenz, RD is a Registered Dietitian provider in Erie, PA (NPI 1467835736).
Provider details
- NPI number
- 1467835736
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RD
- Sex
- Female
- Sole proprietor
- No
- License
- DN002353 (PA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
20 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) |
|---|---|---|
| Therapy Procedure Reassessment for Nutrition Management, Each 15 Minutes97803 | 20 | $25 |
Typical Medicare-allowed amounts for these services range $25–$25 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-07-06
- Last updated
- 2020-09-08
- Certified
- 2020-09-08
Frequently asked questions
- What is Mary Grenz's NPI number?
- Mary Grenz's National Provider Identifier (NPI) is 1467835736, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Grenz's specialty?
- Mary Grenz is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Mary Grenz located?
- Mary Grenz's practice location on file with NPPES is 3330 Peach St, Erie, PA 16508-2769.
- What is Mary Grenz's phone number?
- The practice phone number listed in the NPPES registry for Mary Grenz is (814) 877-5484.
- Does Mary Grenz accept Medicare?
- Mary Grenz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Grenz's NPI active?
- Yes — Mary Grenz's NPI (1467835736) is active in the NPPES registry as of the last update on 2020-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.