Dr. Darren T. Herzog, MD
- Medicare services, 2021
- 49
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 207
- Hospital affiliations
- 2
- Industry payments
- $1,937
- Practice address
- 107 E Oak Ave, Flagstaff, AZ 86001
- Practice phone
- Call (928) 773-2546
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern Arizona Healthcare Corporation
Flagstaff, Arizona
Find Dr. Herzog'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. Darren T. Herzog is an orthopedic surgeon in Flagstaff, Arizona
Dr. Herzog practices at Northern Arizona Healthcare Corporation in Flagstaff, Arizona.
Dr. Herzog's NPI, 1710119953, was assigned on August 21, 2009. Dr. Herzog holds Arizona license 75684.
- NPI
- 1710119953NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133375512
- NPI enumeration date
- August 21, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (928) 773-2546
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Darren T. Herzog practices at Northern Arizona Healthcare Corporation in Flagstaff, Arizona
Dr. Herzog's primary practice is Northern Arizona Healthcare Corporation, at 107 E Oak Ave, Flagstaff, AZ 86001 in Coconino County. The practice phone is (928) 773-2546.
- Northern Arizona Healthcare Corporation107 E Oak Ave, Flagstaff, AZ 86001 · Coconino CountyPhone(928) 773-2546
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Darren T. Herzog is affiliated with 4 sites of care and 1 medical group
Dr. Herzog's primary practice is Northern Arizona Healthcare Corporation in Flagstaff, Arizona. Dr. Herzog is also affiliated with Flagstaff Medical Center. The medical group on file is Northern Arizona Healthcare. Dmand AI also links Dr. Herzog to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Darren T. Herzog's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Herzog practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Arizona Healthcare Corporation | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Darren T. Herzog is one of 377 orthopedic surgeons in Arizona
Orthopaedic surgery is Dr. Herzog's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Herzog's licenses on file in 3 states: Arizona, Michigan and Montana.
Specialties and state licenses
- Orthopaedic surgery, ArizonaPrimary
- Michigan license
- Adult reconstructive orthopaedic surgery, Montana
Orthopedic surgeons near Dr. Herzog
Counts of orthopedic surgeons 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. Darren T. Herzog billed Medicare for 49 services in 2021
CMS data shows 49 Medicare services from Dr. Herzog across 3 procedure codes in 2021, for 12 Medicare patients. Medicare paid $18,804 for them.
Dr. Herzog's Medicare services by type, 2017 to 2021
- 2017
- 2021
- Office and hospital visits
- 2017: 2272021: 3385%
- Surgery
- 2017: 1152021: 1686%
Where Dr. Herzog's Medicare services took place, 2021
- In an office3367%
- In a facility1633%
Dr. Herzog compared with the Arizona median for orthopedic surgeons, 2021
- Dr. Herzog
- Arizona median
- Medicare services
- 49vs 98895% below
- Medicare patients
- 12vs 28796% below
- Part D claims
- 188vs 742.5 times
Medians across 343 orthopedic surgeons in Arizona with Dmand AI profiles that report each measure.
Dr. Herzog's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Herzog?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Herzog and other orthopedic surgeons in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Darren T. Herzog treated 12 Medicare patients in 2024, average age 78
CMS counts 12 Medicare patients who saw Dr. Herzog in 2024. The largest group is under 65, with 0 patients. 75% of them have high blood pressure. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Herzog's median patient age at 72, with 59% women.
Dr. Herzog's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Herzog's Medicare patients, 2024
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Herzog's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Darren T. Herzog wrote 207 Medicare Part D claims in 2024
In 2024, Dr. Herzog wrote 207 Medicare Part D claims for 63 patients. 100% of them were for generic drugs. CMS names the drug for 188 of them, across 4 drugs with 11 or more claims each, at $1,197 in total drug cost. In 2023, CMS named 142 claims across 4 drugs.
Dr. Herzog's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Herzog's Part D claims, 2024
- Opioids48%100 of 207 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1422024: 18832%
Drugs named by CMS: 4 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Darren T. Herzog ranks in the 80th percentile for hip replacement in Medicare
Dr. Herzog accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 36 procedures of hip replacement by Dr. Herzog, more than 80% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Herzog ranks in Medicare procedure volume
- Hip replacement
- 80th percentile36 procedures
- Knee replacement
- 51st percentile19 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Darren T. Herzog received $1,937 in industry payments from 2016 to 2025
CMS Open Payments shows 21 general payments to Dr. Herzog from 5 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 55% of the total. Encore Medical, LP paid the most, $963.
General payments to Dr. Herzog by program year, 2016 to 2025
General payments to Dr. Herzog by kind, 2016 to 2025
- Travel and lodging$1,06055%
- Food and beverage$87745%
Companies that paid Dr. Herzog the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Darren T. Herzog'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Medicare Part D Prescribers - by Provider (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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Darren T. Herzog
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. Darren T. Herzog's NPI number?
Dr. Darren T. Herzog's NPI number is 1710119953. It was assigned on August 21, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Darren T. Herzog?
Dr. Darren T. Herzog is an orthopedic surgeon in Flagstaff, Arizona. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Darren T. Herzog practice?
Dr. Herzog practices at 107 E Oak Ave, Flagstaff, AZ 86001. Dr. Herzog's primary practice is Northern Arizona Healthcare Corporation in Flagstaff, Arizona. Dmand AI also links Dr. Herzog to 1 hospital and 1 group practice or clinic.
What is Dr. Darren T. Herzog's office phone number?
The practice phone on file for Dr. Herzog is (928) 773-2546.
What is Dr. Darren T. Herzog's medical license number?
Dr. Herzog holds Arizona license 75684, one of the licenses on file in 3 states.
Which states has Dr. Darren T. Herzog been licensed in?
Dmand AI has state licenses on file for Dr. Herzog in Arizona, Michigan and Montana.
Which hospitals is Dr. Darren T. Herzog affiliated with?
Dr. Herzog is affiliated with Flagstaff Medical Center. Dmand AI links Dr. Herzog to 1 more hospital.
What medical group is Dr. Darren T. Herzog part of?
Dr. Herzog is linked to Northern Arizona Healthcare.
Does Dr. Darren T. Herzog accept Medicare?
Yes. CMS data shows Dr. Herzog billed Medicare for 49 services in 2021, and Dr. Herzog accepts Medicare assignment.
How many Medicare patients does Dr. Darren T. Herzog see?
CMS counts 12 Medicare patients who saw Dr. Herzog in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Dr. Darren T. Herzog bill to Medicare?
In 2021, Dr. Herzog's most billed Medicare services were office visit, new patient (99203), surgery: bones and joints (27447) and office visit, established patient (99213).
What drugs does Dr. Darren T. Herzog prescribe most?
In 2024 Medicare Part D data, Dr. Herzog's most prescribed drugs by claims were Oxycodone HCl, Gabapentin and Celecoxib.
Has Dr. Darren T. Herzog received payments from drug or device companies?
CMS Open Payments shows $1,937 in general payments to Dr. Herzog from 5 companies from 2016 to 2025. The largest total came from Encore Medical, LP.
How long has Dr. Darren T. Herzog been practicing?
Dr. Herzog graduated from medical school in 2006, 20 years ago.
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