Mary Silcox, FNP-BC
NPI 1770008112 · Family Nurse Practitioner · Tuba City, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Silcox, FNP-BC is a Family Nurse Practitioner provider in Tuba City, AZ (NPI 1770008112).
Provider details
- NPI number
- 1770008112
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 257468 (AZ)
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 tenure28% of score
8 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
270 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 159 | $79 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 111 | $54 |
Typical Medicare-allowed amounts for these services range $54–$79 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 221 | 47 |
| Lisinopril | 201 | 34 |
| Metformin Hclbrand: Metformin Hcl Er | 141 | 21 |
| Levothyroxine Sodium | 80 | 13 |
| Amlodipine Besylate | 65 | 13 |
| Alendronate Sodium | 60 | 11 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-08-07
- Last updated
- 2025-05-13
- Certified
- 2025-05-06
Frequently asked questions
- What is Mary Silcox's NPI number?
- Mary Silcox's National Provider Identifier (NPI) is 1770008112, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Silcox's specialty?
- Mary Silcox is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Silcox located?
- Mary Silcox's practice location on file with NPPES is 167 N Main St, Tuba City, AZ 86045.
- What is Mary Silcox's phone number?
- The practice phone number listed in the NPPES registry for Mary Silcox is (928) 283-2501.
- Does Mary Silcox accept Medicare?
- Mary Silcox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Silcox's NPI active?
- Yes — Mary Silcox's NPI (1770008112) is active in the NPPES registry as of the last update on 2025-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.