Dr. Tammy Jolene Penhollow, DO
- Medicare services, 2024
- 259
- Medicare patients, 2024
- 349
- Part D claims, 2016
- 163
- Hospital affiliations
- 1
- Industry payments
- $85
- Practice address
- 5777 East Mayo Boulevard, Phoenix, AZ 85054
- Practice phone
- Call (480) 342-4201
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Penhollow's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Tammy Jolene Penhollow is an anesthesiologist in Phoenix, Arizona
Dr. Penhollow practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona, part of Mayo Clinic.
Dr. Penhollow's NPI, 1487632535, was assigned on January 7, 2006. Dr. Penhollow graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1998. Dr. Penhollow holds Arizona license 005934.
- NPI
- 1487632535NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769636760
- NPI enumeration date
- January 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 342-4201
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tammy Jolene Penhollow practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona
Dr. Penhollow's primary practice is Mayo Clinic Hospital - Phoenix, at 5777 East Mayo Boulevard, Phoenix, AZ 85054 in Maricopa County. The practice phone is (480) 342-4201.
- Mayo Clinic Hospital - Phoenix5777 East Mayo Boulevard, Phoenix, AZ 85054 · Maricopa CountyPhone(480) 342-4201
Source: Dmand AI Affiliation Data
Dr. Tammy Jolene Penhollow is affiliated with 2 sites of care and 2 medical groups
Dr. Penhollow's primary practice is Mayo Clinic Hospital - Phoenix in Phoenix, Arizona, part of Mayo Clinic. The medical group on file is Mayo Clinic Arizona. Dmand AI also links Dr. Penhollow to 1 more ambulatory surgery center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Tammy Jolene Penhollow's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Penhollow practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital - Phoenix | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tammy Jolene Penhollow is one of 1,244 anesthesiologists in Arizona
Anesthesiology is Dr. Penhollow's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Penhollow is licensed in Arizona.
Specialties and state licenses
- Anesthesiology, ArizonaPrimary
Anesthesiologists near Dr. Penhollow
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Tammy Jolene Penhollow billed Medicare for 259 services in 2024
CMS data shows 259 Medicare services from Dr. Penhollow across 6 procedure codes in 2024, for 349 Medicare patients. Medicare paid $19,671 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Penhollow's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 5032024: 25949%
Dr. Penhollow compared with the Arizona median for anesthesiologists, 2024
- Dr. Penhollow
- Arizona median
- Medicare services
- 259vs 723.6 times
- Medicare patients
- 349vs 1332.6 times
- Part D claims
- 163vs 227.4 times
Medians across 1,218 anesthesiologists in Arizona with Dmand AI profiles that report each measure.
Dr. Penhollow's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Penhollow and other anesthesiologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tammy Jolene Penhollow treated 349 Medicare patients in 2024, average age 73
CMS counts 349 Medicare patients who saw Dr. Penhollow in 2024. The largest group is 65 to 74, with 194 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.44, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Penhollow's median patient age at 69, with 77% women.
Dr. Penhollow's Medicare patients by age, 2024
Dr. Penhollow's Medicare patients by sex, 2024
- Women20458%
- Men14542%
Chronic conditions among Dr. Penhollow's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis47%
- Cancer28%
- Chronic kidney disease28%
- Ischemic heart disease26%
- Diabetes25%
- Anxiety24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Penhollow's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women77%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tammy Jolene Penhollow wrote 163 Medicare Part D claims in 2016
In 2016, Dr. Penhollow wrote 163 Medicare Part D claims. They cover 7 drugs, with $4,578 in total drug cost.
Dr. Penhollow's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Tammy Jolene Penhollow takes part in Medicare
Dr. Penhollow accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Tammy Jolene Penhollow received $85 in industry payments from 2016 to 2021
CMS Open Payments shows 6 general payments to Dr. Penhollow from 5 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $31.
General payments to Dr. Penhollow by program year, 2016 to 2021
Companies that paid Dr. Penhollow the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Tammy Jolene Penhollow graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Penhollow graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Tammy Jolene Penhollow's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Tammy Jolene Penhollow
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Tammy Jolene Penhollow's NPI number?
Dr. Tammy Jolene Penhollow's NPI number is 1487632535. It was assigned on January 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Tammy Jolene Penhollow?
Dr. Tammy Jolene Penhollow is an anesthesiologist in Phoenix, Arizona. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Tammy Jolene Penhollow practice?
Dr. Penhollow practices at 5777 East Mayo Boulevard, Phoenix, AZ 85054. Dr. Penhollow's primary practice is Mayo Clinic Hospital - Phoenix in Phoenix, Arizona, part of Mayo Clinic. Dmand AI also links Dr. Penhollow to 1 ambulatory surgery center and 1 medical group.
What is Dr. Tammy Jolene Penhollow's office phone number?
The practice phone on file for Dr. Penhollow is (480) 342-4201.
What is Dr. Tammy Jolene Penhollow's medical license number?
Dr. Penhollow holds Arizona license 005934.
Which hospitals is Dr. Tammy Jolene Penhollow affiliated with?
Dr. Penhollow practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona.
What medical group is Dr. Tammy Jolene Penhollow part of?
Dr. Penhollow is linked to Mayo Clinic Arizona. Dmand AI links Dr. Penhollow to 1 more medical group.
Does Dr. Tammy Jolene Penhollow accept Medicare?
Yes. CMS data shows Dr. Penhollow billed Medicare for 259 services in 2024, and Dr. Penhollow accepts Medicare assignment.
How many Medicare patients does Dr. Tammy Jolene Penhollow see?
CMS counts 349 Medicare patients who saw Dr. Penhollow in 2024, with an average age of 73.
What services does Dr. Tammy Jolene Penhollow bill to Medicare?
In 2024, Dr. Penhollow's most billed Medicare services were anesthesia (00731), anesthesia (00811) and anesthesia (00813).
Show 4 more questionsShow fewer questions
Where did Dr. Tammy Jolene Penhollow go to medical school?
Dr. Penhollow graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1998.
What drugs does Dr. Tammy Jolene Penhollow prescribe most?
In 2016 Medicare Part D data, Dr. Penhollow's most prescribed drugs by claims were Gabapentin, Meloxicam and Tramadol HCl.
Has Dr. Tammy Jolene Penhollow received payments from drug or device companies?
CMS Open Payments shows $85 in general payments to Dr. Penhollow from 5 companies from 2016 to 2021. The largest total came from Abbott Laboratories.
How long has Dr. Tammy Jolene Penhollow been practicing?
Dr. Penhollow graduated from medical school in 1998, 28 years ago.
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