Dr. Daniel Witten, MD
- Medicare services, 2024
- 3,172
- Medicare patients, 2024
- 143
- Part D claims, 2024
- 5,200
- Hospital affiliations
- 1
- Industry payments
- $1,367
- Practice address
- 4500 E 9th Ave, Denver, CO 80220
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Internal Medicine - HOPD
Acute Care Hospital outpatient department · Denver, Colorado
Find Dr. Witten'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. Daniel Witten is an internist in Denver, Colorado
Dr. Witten practices at Advanced Internal Medicine - HOPD in Denver, Colorado.
Dr. Witten's NPI, 1245233782, was assigned on May 28, 2005. Dr. Witten holds Colorado license 40778.
- NPI
- 1245233782NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082503909
- NPI enumeration date
- May 28, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Witten practices at Advanced Internal Medicine - HOPD in Denver, Colorado
Dr. Witten's primary practice is Advanced Internal Medicine - HOPD, at 4500 E 9th Ave, Denver, CO 80220.
- Advanced Internal Medicine - HOPD4500 E 9th Ave, Denver, CO 80220
Source: Dmand AI Affiliation Data
Dr. Daniel Witten is affiliated with 4 sites of care and 1 medical group
Dr. Witten's primary practice is Advanced Internal Medicine - HOPD in Denver, Colorado. Dr. Witten is also affiliated with HCA HealthONE Rose. The medical group on file is Ninth Avenue Internal Medicine. Dmand AI also links Dr. Witten to 1 more group practice or clinic and 1 home health agency, each named with a free account. Dr. Witten's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Daniel Witten's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Witten practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Internal Medicine - HOPD | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Daniel Witten is one of 1,668 internists in Colorado
Internal medicine is Dr. Witten's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Witten is licensed in Colorado.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
Internists near Dr. Witten
Counts of internists 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. Daniel Witten billed Medicare for 3,172 services in 2024
CMS data shows 3,172 Medicare services from Dr. Witten across 26 procedure codes in 2024, for 143 Medicare patients. Medicare paid $186,534 for them. Every service was in an office.
Dr. Witten's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,1002024: 2,2397%
- Other services
- 2023: 3552024: 44124%
- Tests and treatments
- 2023: 4472024: 31629%
- Drugs given in the office
- 2023: 742024: 763%
- Lab and pathology
- 2023: 942024: 6234%
- Surgery
- 2023: 182024: 38111%
Dr. Witten compared with the Colorado median for internists, 2024
- Dr. Witten
- Colorado median
- Medicare services
- 3,172vs 3778.4 times
- Medicare patients
- 143vs 18623% below
- Part D claims
- 4,543vs 31814.3 times
Medians across 1,630 internists in Colorado with Dmand AI profiles that report each measure.
Dr. Witten'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.
Need commercial claims for Dr. Witten?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Witten and other internists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Witten treated 143 Medicare patients in 2024, average age 78
CMS counts 143 Medicare patients who saw Dr. Witten in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Witten's median patient age at 58, with 36% women.
Dr. Witten's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Witten's Medicare patients by sex, 2024
- Women5841%
- Men8559%
Chronic conditions among Dr. Witten's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes37%
- Mood disorders32%
- Depression31%
- Chronic kidney disease29%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Witten's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Witten wrote 5,200 Medicare Part D claims in 2024
In 2024, Dr. Witten wrote 5,200 Medicare Part D claims for 248 patients. 81% of them were for generic drugs. CMS names the drug for 4,543 of them, across 100 drugs with 11 or more claims each, at $496,480 in total drug cost. In 2023, CMS named 4,732 claims across 106 drugs.
Dr. Witten's Part D claims by kind of drug, 2024
- Generic4,236 claims81%
- Brand-name941 claims18%
- Other23 claims0%
Dr. Witten'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. Witten's Part D claims, 2024
- Opioids3%147 of 5,200 claims
- Antibiotics1%67 of 5,200 claims
- Antipsychotics, patients 65 and over0%11 of 5,200 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: 4,7322024: 4,5434%
Drugs named by CMS: 100 in 2024, 106 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. Daniel Witten ranks in the 60th percentile for removal of skin lesions in Medicare
Dr. Witten accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Witten as offering telehealth. CMS counts 13 procedures of removal of skin lesions by Dr. Witten, more than 60% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Witten ranks in Medicare procedure volume
- Removal of skin lesions
- 60th percentile13 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Daniel Witten received $1,367 in industry payments from 2016 to 2025
CMS Open Payments shows 62 general payments to Dr. Witten from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $198.
General payments to Dr. Witten by program year, 2016 to 2025
Companies that paid Dr. Witten 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. Daniel Witten'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 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. Daniel Witten
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. Daniel Witten's NPI number?
Dr. Daniel Witten's NPI number is 1245233782. It was assigned on May 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Witten?
Dr. Daniel Witten is an internist in Denver, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daniel Witten practice?
Dr. Witten practices at 4500 E 9th Ave, Denver, CO 80220. Dr. Witten's primary practice is Advanced Internal Medicine - HOPD in Denver, Colorado. Dmand AI also links Dr. Witten to 1 group practice or clinic and 1 home health agency.
What is Dr. Daniel Witten's medical license number?
Dr. Witten holds Colorado license 40778.
Which hospitals is Dr. Daniel Witten affiliated with?
Dr. Witten is affiliated with HCA HealthONE Rose.
What medical group is Dr. Daniel Witten part of?
Dr. Witten is linked to Ninth Avenue Internal Medicine.
Does Dr. Daniel Witten accept Medicare?
Yes. CMS data shows Dr. Witten billed Medicare for 3,172 services in 2024, and Dr. Witten accepts Medicare assignment.
Does Dr. Daniel Witten offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Witten as offering telehealth services.
How many Medicare patients does Dr. Daniel Witten see?
CMS counts 143 Medicare patients who saw Dr. Witten in 2024, with an average age of 78.
What services does Dr. Daniel Witten bill to Medicare?
In 2024, Dr. Witten's most billed Medicare services were care management and other visits (99489), office visit, established patient (99214) and care management and other visits (99487).
Show 3 more questionsShow fewer questions
What drugs does Dr. Daniel Witten prescribe most?
In 2024 Medicare Part D data, Dr. Witten's most prescribed drugs by claims were Rosuvastatin Calcium, Levothyroxine Sodium and Lisinopril.
Has Dr. Daniel Witten received payments from drug or device companies?
CMS Open Payments shows $1,367 in general payments to Dr. Witten from 23 companies from 2016 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Daniel Witten been practicing?
Dr. Witten graduated from medical school in 1995, 31 years ago.
Selling to internal medicine practices?
See internists in Colorado by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card