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Dr. Colin Hoffmann Holtze, MD
NPI1275825846PAC ID2769608124
- Medicare services, 2024
- 947
- Medicare patients, 2024
- 441
- Part D claims, 2024
- 1,821
- Publications
- 7
- Hospital affiliations
- 4
- Practice address
- 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48105
- Practice phone
- Call (734) 712-7688
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
IHA Health Services Corporation
Ann Arbor, Michigan
Find Dr. Holtze's professional email, personal email and mobile number
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Dr. Colin Hoffmann Holtze is a pulmonologist in Ann Arbor, Michigan
Dr. Holtze practices at IHA Health Services Corporation in Ann Arbor, Michigan.
Dr. Holtze's NPI, 1275825846, was assigned on May 13, 2011. Dr. Holtze graduated from University of Iowa, RJ & L Carver College of Medicine in 2011. Dr. Holtze holds Michigan license 4301106884.
NPI and contact details
- NPI
- 1275825846NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769608124
- NPI enumeration date
- May 13, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (734) 712-7688
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Colin Hoffmann Holtze practices at IHA Health Services Corporation in Ann Arbor, Michigan
Dr. Holtze's primary practice is IHA Health Services Corporation, at 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48105 in Washtenaw County. The practice phone is (734) 712-7688.
- IHA Health Services Corporation24 Frank Lloyd Wright Dr, Ann Arbor, MI 48105 · Washtenaw CountyPhone(734) 712-7688
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Colin Hoffmann Holtze is affiliated with 6 sites of care and 1 medical group
Dr. Holtze's primary practice is IHA Health Services Corporation in Ann Arbor, Michigan. Dr. Holtze is also affiliated with Trinity Health Ann Arbor Hospital. The medical group on file is Trinity Health IHA Medical Group. Dmand AI also links Dr. Holtze to 3 more hospitals and 1 group practice or clinic, each named with a free account.
IHA Health Services CorporationPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Colin Hoffmann Holtze's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holtze practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| IHA Health Services Corporation | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Colin Hoffmann Holtze is one of 451 pulmonologists in Michigan
Pulmonary disease is Dr. Holtze's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Holtze is licensed in Michigan.
Specialties and state licenses
- Pulmonary disease, MichiganPrimary
Pulmonologists near Dr. Holtze
Counts of pulmonologists 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. Colin Hoffmann Holtze billed Medicare for 947 services in 2024
CMS data shows 947 Medicare services from Dr. Holtze across 14 procedure codes in 2024, for 441 Medicare patients. Medicare paid $65,692 for them.
Medicare services, 2024947
Medicare patients441
Paid by Medicare$65,692
Procedure codes14
Dr. Holtze's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5982024: 5479%
- Tests and treatments
- 2023: 2992024: 2884%
- Other services
- 2023: 02024: 112
- Surgery
- 2023: 112024: 0100%
Where Dr. Holtze's Medicare services took place, 2024
- In an office60864%
- In a facility33936%
Dr. Holtze compared with the Michigan median for pulmonologists, 2024
- Dr. Holtze
- Michigan median
- Medicare services
- 947vs 60656% above
- Medicare patients
- 441vs 27958% above
- Part D claims
- 1,644vs 4333.8 times
Medians across 437 pulmonologists in Michigan with Dmand AI profiles that report each measure.
Dr. Holtze'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Colin Hoffmann Holtze treated 441 Medicare patients in 2024, average age 73
CMS counts 441 Medicare patients who saw Dr. Holtze in 2024. The largest group is 65 to 74, with 197 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Holtze's median patient age at 68, with 50% women.
Medicare patients, 2024441
Average age73
Average risk score1.74
Also on Medicaid12%
Dr. Holtze's Medicare patients by age, 2024
Dr. Holtze's Medicare patients by sex, 2024
- Women22351%
- Men21849%
Chronic conditions among Dr. Holtze's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- COPD45%
- Ischemic heart disease45%
- Anxiety35%
- Diabetes35%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Holtze's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Colin Hoffmann Holtze wrote 1,821 Medicare Part D claims in 2024
In 2024, Dr. Holtze wrote 1,821 Medicare Part D claims for 383 patients. 45% of them were for generic drugs. CMS names the drug for 1,644 of them, across 26 drugs with 11 or more claims each, at $1,280,154 in total drug cost. In 2023, CMS named 1,285 claims across 25 drugs.
Part D claims, 20241,821
Drugs named by CMS26
Total drug cost$1.3M
Part D patients383
Dr. Holtze's Part D claims by kind of drug, 2024
- Generic823 claims45%
- Brand-name998 claims55%
Dr. Holtze'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. Holtze's Part D claims, 2024
- Antibiotics7%130 of 1,821 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: 1,2852024: 1,64428%
Drugs named by CMS: 26 in 2024, 25 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. Colin Hoffmann Holtze offers telehealth to Medicare patients
Dr. Holtze accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Holtze as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Colin Hoffmann Holtze has 7 publications on record
Dmand AI links 7 papers to Dr. Holtze, published from 2018 to 2019. 2018 was the busiest year, with 3. The most frequent topics are Comorbidity and Idiopathic Pulmonary Fibrosis. Dr. Holtze's most frequent co-authors are Kevin Robert Flaherty, MD, Elizabeth Anne Belloli, MD and Margaret Louise Salisbury, MD.
Papers7
Years published2018 to 2019
Topics Dr. Holtze writes about most
- Comorbidity
- Idiopathic Pulmonary Fibrosis
Dr. Holtze's most frequent co-authors
- Kevin Robert Flaherty, MD6 shared papers
- Elizabeth Anne Belloli, MD3 shared papers
- Margaret Louise Salisbury, MD3 shared papers
Recent publications by Dr. Holtze
ComorbidityDisease ProgressionHealth Care Costs
See who Dr. Holtze researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Holtze works with, so you can find a warm path to the right pulmonologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Colin Hoffmann Holtze received $7,679 in industry payments from 2017 to 2020
CMS Open Payments shows 12 general payments to Dr. Holtze from 1 drug or device company from 2017 to 2020. Speaker and faculty fees make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $7,679.
General payments to Dr. Holtze by program year, 2017 to 2020
Companies that paid Dr. Holtze the most, 2017 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Colin Hoffmann Holtze graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Holtze graduated from University of Iowa, RJ & L Carver College of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Colin Hoffmann Holtze'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 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)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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Colin Hoffmann Holtze
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. Colin Hoffmann Holtze's NPI number?
Dr. Colin Hoffmann Holtze's NPI number is 1275825846. It was assigned on May 13, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Colin Hoffmann Holtze?
Dr. Colin Hoffmann Holtze is a pulmonologist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Colin Hoffmann Holtze practice?
Dr. Holtze practices at 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48105. Dr. Holtze's primary practice is IHA Health Services Corporation in Ann Arbor, Michigan. Dmand AI also links Dr. Holtze to 3 hospitals and 1 group practice or clinic.
What is Dr. Colin Hoffmann Holtze's office phone number?
The practice phone on file for Dr. Holtze is (734) 712-7688.
What is Dr. Colin Hoffmann Holtze's medical license number?
Dr. Holtze holds Michigan license 4301106884.
Which hospitals is Dr. Colin Hoffmann Holtze affiliated with?
Dr. Holtze is affiliated with Trinity Health Ann Arbor Hospital. Dmand AI links Dr. Holtze to 3 more hospitals.
What medical group is Dr. Colin Hoffmann Holtze part of?
Dr. Holtze is linked to Trinity Health IHA Medical Group.
Does Dr. Colin Hoffmann Holtze accept Medicare?
Yes. CMS data shows Dr. Holtze billed Medicare for 947 services in 2024, and Dr. Holtze accepts Medicare assignment.
Does Dr. Colin Hoffmann Holtze offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Holtze as offering telehealth services.
How many Medicare patients does Dr. Colin Hoffmann Holtze see?
CMS counts 441 Medicare patients who saw Dr. Holtze in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Dr. Colin Hoffmann Holtze bill to Medicare?
In 2024, Dr. Holtze's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and critical care (99291).
Where did Dr. Colin Hoffmann Holtze go to medical school?
Dr. Holtze graduated from University of Iowa, RJ & L Carver College of Medicine in 2011.
What drugs does Dr. Colin Hoffmann Holtze prescribe most?
In 2024 Medicare Part D data, Dr. Holtze's most prescribed drugs by claims were Fluticasone-Salmeterol, Trelegy Ellipta and Albuterol Sulfate Hfa.
Has Dr. Colin Hoffmann Holtze received payments from drug or device companies?
CMS Open Payments shows $7,679 in general payments to Dr. Holtze from 1 company from 2017 to 2020. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Colin Hoffmann Holtze been practicing?
Dr. Holtze graduated from medical school in 2011, 15 years ago.
Does Dr. Colin Hoffmann Holtze do research?
Dmand AI links 7 publications to Dr. Holtze, published from 2018 to 2019.
Who does Dr. Colin Hoffmann Holtze publish with?
Dr. Holtze's most frequent co-authors are Kevin Robert Flaherty, MD (6 shared papers), Elizabeth Anne Belloli, MD (3 shared papers) and Margaret Louise Salisbury, MD (3 shared papers).
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