Tammy Penhollow, DO
NPI 1487632535 · Anesthesiology Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Penhollow, DO is a Anesthesiology Physician provider in Scottsdale, AZ (NPI 1487632535).
Provider details
- NPI number
- 1487632535
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 005934 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
259 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 107 | $86 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 67 | $76 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 34 | $98 |
| Anesthesia for Other Closed Procedure on Chest00520 | 21 | $101 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 17 | $66 |
| Anesthesia for Other Procedure on Lower Abdomen00840 | 13 | $313 |
Typical Medicare-allowed amounts for these services range $66–$313 (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)
- 2345 E Thomas Rd Ste 400Phoenix, AZ 85016-7862Phone: (602) 343-2907
Registry dates
- Enumerated
- 2006-01-07
- Last updated
- 2020-09-08
- Certified
- 2020-09-08
Frequently asked questions
- What is Tammy Penhollow's NPI number?
- Tammy Penhollow's National Provider Identifier (NPI) is 1487632535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Penhollow's specialty?
- Tammy Penhollow is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Tammy Penhollow located?
- Tammy Penhollow's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259-5452.
- What is Tammy Penhollow's phone number?
- The practice phone number listed in the NPPES registry for Tammy Penhollow is (480) 301-8000.
- Does Tammy Penhollow accept Medicare?
- Tammy Penhollow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Penhollow's NPI active?
- Yes — Tammy Penhollow's NPI (1487632535) 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.