Crystal Cox, PA
NPI 1811195100 · Physician Assistant · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Cox, PA is a Physician Assistant provider in Santa Rosa, CA (NPI 1811195100).
Provider details
- NPI number
- 1811195100
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 12696 (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 tenure28% of score
18 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
501 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 203 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 106 | $118 |
| Automated Urinalysis Test81003 | 68 | $2 |
| Detection Test By Multiplex Amplified Probe Technique for Severe Acute Respiratory Syndrome Coronavirus 2 (sars-Cov-2) (covid-19), Influenza Virus Types a and B, and Respiratory Syncytial Virus87637 | 38 | $140 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 31 | $16 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 44 | 44 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 40 | 39 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 39 | 35 |
| Azithromycin | 35 | 35 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 31 | 30 |
| Mupirocin | 22 | 21 |
| Doxycycline Hyclate | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-07
- Last updated
- 2022-08-05
- Certified
- 2022-08-05
Frequently asked questions
- What is Crystal Cox's NPI number?
- Crystal Cox's National Provider Identifier (NPI) is 1811195100, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Cox's specialty?
- Crystal Cox is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Crystal Cox located?
- Crystal Cox's practice location on file with NPPES is 3883 Airway Dr Ste 120, Santa Rosa, CA 95403-1678.
- What is Crystal Cox's phone number?
- The practice phone number listed in the NPPES registry for Crystal Cox is (707) 521-4495.
- Does Crystal Cox accept Medicare?
- Crystal Cox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Cox's NPI active?
- Yes — Crystal Cox's NPI (1811195100) is active in the NPPES registry as of the last update on 2022-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.