Dr. Zachary Alexander Boltwood, DO

  • Ann Arbor, MI
  • Internist
NPI1780064410PAC ID3577874007
Medicare services, 2024
244
Medicare patients, 2024
111
Part D claims, 2024
83
Hospital affiliations
1
Medical groups
3
Practice address
1500 E Medical Center Dr, Ann Arbor, MI 48109
Practice phone
Call (734) 936-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

University Hospital

School-Based Health Center · Ann Arbor, Michigan

See all 5 affiliations

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Dr. Zachary Alexander Boltwood is an internist in Ann Arbor, Michigan

Dr. Boltwood practices at University Hospital in Ann Arbor, Michigan.

Dr. Boltwood's NPI, 1780064410, was assigned on June 8, 2015. Dr. Boltwood graduated from Michigan State University College of Osteopathic Medicine in 2015. Dr. Boltwood holds Michigan license 5101023899.

NPI and contact details
Medicare PAC ID
3577874007
NPI enumeration date
June 8, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(734) 936-4000
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Zachary Alexander Boltwood practices at University Hospital in Ann Arbor, Michigan

Dr. Boltwood's primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.

  • University Hospital
    1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000

Source: Dmand AI Affiliation Data

Dr. Zachary Alexander Boltwood is affiliated with 2 sites of care and 3 medical groups

Dr. Boltwood's primary practice is University Hospital in Ann Arbor, Michigan. Dr. Boltwood is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dmand AI also links Dr. Boltwood to 2 more medical groups, each named with a free account. Dr. Boltwood's employer is on file too: a school & student health.

See all 5 affiliations for Dr. Boltwood

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Zachary Alexander Boltwood's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Boltwood practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
University HospitalAvailable with a free account
+1 more site and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Zachary Alexander Boltwood is one of 4,804 internists in Michigan

Internal medicine is Dr. Boltwood's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Boltwood is licensed in Michigan.

Specialties and state licenses

  • Internal medicine, MichiganPrimaryLicense 5101023899 · taxonomy 207R00000X

Internists near Dr. Boltwood

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. Zachary Alexander Boltwood billed Medicare for 244 services in 2024

CMS data shows 244 Medicare services from Dr. Boltwood across 5 procedure codes in 2024, for 111 Medicare patients. Medicare paid $18,307 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024244
Medicare patients111
Paid by Medicare$18,307
Procedure codes5

Dr. Boltwood's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3142024: 24422%

Dr. Boltwood compared with the Michigan median for internists, 2024

  • Dr. Boltwood
  • Michigan median
Medicare services
244vs 42342% below
Medicare patients
111vs 15930% below

Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.

Dr. Boltwood'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.

See all procedures by Dr. Boltwood

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Zachary Alexander Boltwood treated 111 Medicare patients in 2024, average age 70

CMS counts 111 Medicare patients who saw Dr. Boltwood in 2024. The largest group is 65 to 74, with 36 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 41% are also on Medicaid. Their average risk score is 3.10, 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. Boltwood's median patient age at 65, with 51% women.

Medicare patients, 2024111
Average age70
Average risk score3.10
Also on Medicaid41%

Dr. Boltwood's Medicare patients by age, 2024

Dr. Boltwood's Medicare patients by sex, 2024

  • Women5449%
  • Men5751%

Chronic conditions among Dr. Boltwood's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol71%
  3. Arthritis53%
  4. Chronic kidney disease53%
  5. Anxiety49%
  6. Diabetes47%
  7. Heart failure45%
  8. Mood disorders45%

Share of Medicare patients with each condition. A patient can have several.

Dr. Boltwood's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 65

Patient panel by sex, all payers

  • Women51%
  • Men49%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Zachary Alexander Boltwood wrote 83 Medicare Part D claims in 2024

In 2024, Dr. Boltwood wrote 83 Medicare Part D claims for 41 patients. 87% of them were for generic drugs.

Part D claims, 202483
Part D patients41

Dr. Boltwood's Part D claims by kind of drug, 2024

  • Generic72 claims87%
  • Brand-name and other11 claims13%

Drug classes CMS tracks in Dr. Boltwood's Part D claims, 2024

  • Antibiotics34%28 of 83 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Zachary Alexander Boltwood takes part in Medicare

Dr. Boltwood 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. Zachary Alexander Boltwood graduated from Michigan State University College of Osteopathic Medicine

Dr. Boltwood graduated from Michigan State University College of Osteopathic Medicine in 2015.

  1. Medical schoolMichigan State University College of Osteopathic Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Zachary Alexander Boltwood's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Zachary Alexander Boltwood

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. Zachary Alexander Boltwood's NPI number?

Dr. Zachary Alexander Boltwood's NPI number is 1780064410. It was assigned on June 8, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Zachary Alexander Boltwood?

Dr. Zachary Alexander Boltwood is an internist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Zachary Alexander Boltwood practice?

Dr. Boltwood practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Boltwood's primary practice is University Hospital in Ann Arbor, Michigan. Dmand AI also links Dr. Boltwood to 2 medical groups.

What is Dr. Zachary Alexander Boltwood's office phone number?

The practice phone on file for Dr. Boltwood is (734) 936-4000.

What is Dr. Zachary Alexander Boltwood's medical license number?

Dr. Boltwood holds Michigan license 5101023899.

Which hospitals is Dr. Zachary Alexander Boltwood affiliated with?

Dr. Boltwood is affiliated with University Hospital.

What medical group is Dr. Zachary Alexander Boltwood part of?

Dr. Boltwood is linked to University of Michigan Health. Dmand AI links Dr. Boltwood to 2 more medical groups.

Does Dr. Zachary Alexander Boltwood accept Medicare?

Yes. CMS data shows Dr. Boltwood billed Medicare for 244 services in 2024, and Dr. Boltwood accepts Medicare assignment.

How many Medicare patients does Dr. Zachary Alexander Boltwood see?

CMS counts 111 Medicare patients who saw Dr. Boltwood in 2024, with an average age of 70.

What services does Dr. Zachary Alexander Boltwood bill to Medicare?

In 2024, Dr. Boltwood's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).

Where did Dr. Zachary Alexander Boltwood go to medical school?

Dr. Boltwood graduated from Michigan State University College of Osteopathic Medicine in 2015.

How long has Dr. Zachary Alexander Boltwood been practicing?

Dr. Boltwood graduated from medical school in 2015, 11 years ago.

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