Therese Grenchik, FNP
NPI 1679608442 · Family Nurse Practitioner · Daly City, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Therese Grenchik, FNP is a Family Nurse Practitioner provider in Daly City, CA (NPI 1679608442).
Provider details
- NPI number
- 1679608442
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 523959 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 84 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 325 | 128 |
| Levothyroxine Sodium | 191 | 68 |
| Losartan Potassium | 190 | 64 |
| Amlodipine Besylate | 175 | 64 |
| Gabapentin | 131 | 47 |
| Metformin Hclbrand: Metformin Hcl Er | 116 | 47 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,018 across 46 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1500 Southgate AveSuite 209Daly City, CA 94015-2259Phone: (650) 994-9090Fax: (650) 994-9093
Registry dates
- Enumerated
- 2007-02-22
- Last updated
- 2019-05-09
Frequently asked questions
- What is Therese Grenchik's NPI number?
- Therese Grenchik's National Provider Identifier (NPI) is 1679608442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Therese Grenchik's specialty?
- Therese Grenchik is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Therese Grenchik located?
- Therese Grenchik's practice location on file with NPPES is 901 Campus Dr Ste 214, Daly City, CA 94015-4930.
- What is Therese Grenchik's phone number?
- The practice phone number listed in the NPPES registry for Therese Grenchik is (650) 993-6300.
- Does Therese Grenchik accept Medicare?
- Therese Grenchik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Therese Grenchik's NPI active?
- Yes — Therese Grenchik's NPI (1679608442) is active in the NPPES registry as of the last update on 2019-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.