Office listed in NPPES
3400 Escalante Ovi, Flagstaff, AZ 86001
9282261239
Confirm this address and number with the practice. Registry information may be outdated.
Physician registry profile
Heather Daryl Crittenden
MD · Flagstaff, AZ
Record details
- NPI
- 1467448142
- Registry updated
- 03/15/2021
- Imported
- 2026-11-03
- Registry specialty labels (English)
- Internal Medicine
Before arranging a visit
Confirm current services, ages treated, insurance, location, hospital affiliations and appointment availability directly with the practice. An active NPI does not verify current licensure, certification or practice status.
A registry specialty label does not establish that a clinician currently provides the particular care you need.
Documented Medicare service activity
Reporting year: 2024. These are billed services or units in Original Medicare Part B, not total career experience, all patients, surgical case counts or a quality rating.
Scroll the table sideways to see every column.
| HCPCS | Billed services / units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 99222 | 14 | 14 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Facility |
| 99223 | 125 | 122 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Facility |
| 99231 | 35 | 28 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Facility |
| 99232 | 101 | 66 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Facility |
| 99233 | 194 | 112 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Facility |
| 99497 | 139 | 116 | Advance care planning, first 30 minutes | Facility |
| 99498 | 23 | 21 | Advance care planning, each additional 30 minutes | Facility |
| G0316 | 46 | 30 | Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | Facility |
How to interpret these counts
CMS suppresses provider/service rows involving fewer than 11 beneficiaries. Services may repeat for one person, and beneficiaries cannot be added across rows. Facility/non-facility describes billing and does not establish a current hospital affiliation. These counts do not report case complexity, clinical outcomes or whether a treatment is appropriate for you.
Exact CMS source rows for this NPI · Checked 2026-11-03