Dr. Zachary M. Baker, DO
- Medicare services, 2024
- 424
- Medicare patients, 2024
- 295
- Part D claims, 2024
- 447
- Hospital affiliations
- 3
- Industry payments
- $123
- Practice address
- 1190 Waianuenue Avenue, Hilo, HI 96720
- Practice phone
- Call (808) 932-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Baker'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. Zachary M. Baker is an emergency medicine physician in Hilo, Hawaii
Dr. Baker practices at Hilo Benioff Medical Center in Hilo, Hawaii, part of State of Hawaiʻi.
Dr. Baker's NPI, 1669891594, was assigned on April 8, 2014. Dr. Baker graduated from Michigan State University College of Osteopathic Medicine in 2014. Dr. Baker holds Ohio license 34.013519.
- NPI
- 1669891594NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587881537
- NPI enumeration date
- April 8, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 932-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zachary M. Baker practices at Hilo Benioff Medical Center in Hilo, Hawaii
Dr. Baker's primary practice is Hilo Benioff Medical Center, at 1190 Waianuenue Avenue, Hilo, HI 96720 in Hawaii County. The practice phone is (808) 932-3000.
- Hilo Benioff Medical Center1190 Waianuenue Avenue, Hilo, HI 96720 · Hawaii CountyPhone(808) 932-3000
Source: Dmand AI Affiliation Data
Dr. Zachary M. Baker is affiliated with 3 sites of care and 3 medical groups
Dr. Baker's primary practice is Hilo Benioff Medical Center in Hilo, Hawaii, part of State of Hawaiʻi. Dr. Baker is also affiliated with Ka'u Hospital. The medical group on file is Ka'u Hospital. Dmand AI also links Dr. Baker to 1 more hospital and 2 medical groups, 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. Zachary M. Baker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Baker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hilo Benioff Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zachary M. Baker is one of 393 emergency medicine physicians in Hawaii
Emergency medicine is Dr. Baker's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Baker is licensed in Ohio.
Specialties and state licenses
- Emergency medicine, OhioPrimary
Emergency medicine physicians near Dr. Baker
Counts of emergency medicine physicians 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 M. Baker billed Medicare for 424 services in 2024
CMS data shows 424 Medicare services from Dr. Baker across 4 procedure codes in 2024, for 295 Medicare patients. Medicare paid $35,614 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Baker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3352024: 3107%
- Tests and treatments
- 2023: 922024: 11424%
Dr. Baker compared with the Hawaii median for emergency medicine physicians, 2024
- Dr. Baker
- Hawaii median
- Medicare services
- 424vs 22985% above
- Medicare patients
- 295vs 20445% above
- Part D claims
- 263vs 723.7 times
Medians across 378 emergency medicine physicians in Hawaii with Dmand AI profiles that report each measure.
Dr. Baker'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. Zachary M. Baker treated 295 Medicare patients in 2024, average age 75
CMS counts 295 Medicare patients who saw Dr. Baker in 2024. The largest group is 65 to 74, with 111 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.56, 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. Baker's median patient age at 46, with 50% women.
Dr. Baker's Medicare patients by age, 2024
Dr. Baker's Medicare patients by sex, 2024
- Women14850%
- Men14750%
Chronic conditions among Dr. Baker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis41%
- Chronic kidney disease36%
- Diabetes36%
- Ischemic heart disease30%
- Atrial fibrillation26%
- Heart failure26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Baker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
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. Zachary M. Baker wrote 447 Medicare Part D claims in 2024
In 2024, Dr. Baker wrote 447 Medicare Part D claims for 255 patients. 92% of them were for generic drugs. CMS names the drug for 263 of them, across 9 drugs with 11 or more claims each, at $2,204 in total drug cost. In 2023, CMS named 166 claims across 6 drugs.
Dr. Baker's Part D claims by kind of drug, 2024
- Generic410 claims92%
- Brand-name and other37 claims8%
Dr. Baker'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. Baker's Part D claims, 2024
- Opioids4%16 of 447 claims
- Antibiotics33%147 of 447 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: 1662024: 26358%
Drugs named by CMS: 9 in 2024, 6 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
How Dr. Zachary M. Baker takes part in Medicare
Dr. Baker 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 M. Baker received $123 in industry payments from 2022 to 2025
CMS Open Payments shows 5 general payments to Dr. Baker from 1 drug or device company from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $123.
General payments to Dr. Baker by program year, 2022 to 2025
Companies that paid Dr. Baker the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Zachary M. Baker graduated from Michigan State University College of Osteopathic Medicine
Dr. Baker graduated from Michigan State University College of Osteopathic Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Zachary M. Baker'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)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) |
| 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. Zachary M. Baker
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 M. Baker's NPI number?
Dr. Zachary M. Baker's NPI number is 1669891594. It was assigned on April 8, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Zachary M. Baker?
Dr. Zachary M. Baker is an emergency medicine physician in Hilo, Hawaii. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Zachary M. Baker practice?
Dr. Baker practices at 1190 Waianuenue Avenue, Hilo, HI 96720. Dr. Baker's primary practice is Hilo Benioff Medical Center in Hilo, Hawaii, part of State of Hawaiʻi. Dmand AI also links Dr. Baker to 1 hospital and 2 medical groups.
What is Dr. Zachary M. Baker's office phone number?
The practice phone on file for Dr. Baker is (808) 932-3000.
What is Dr. Zachary M. Baker's medical license number?
Dr. Baker holds Ohio license 34.013519.
Which hospitals is Dr. Zachary M. Baker affiliated with?
Dr. Baker practices at Hilo Benioff Medical Center in Hilo, Hawaii. Dr. Baker is also affiliated with Ka'u Hospital. Dmand AI links Dr. Baker to 1 more hospital.
What medical group is Dr. Zachary M. Baker part of?
Dr. Baker is linked to Ka'u Hospital. Dmand AI links Dr. Baker to 2 more medical groups.
Does Dr. Zachary M. Baker accept Medicare?
Yes. CMS data shows Dr. Baker billed Medicare for 424 services in 2024, and Dr. Baker accepts Medicare assignment.
How many Medicare patients does Dr. Zachary M. Baker see?
CMS counts 295 Medicare patients who saw Dr. Baker in 2024, with an average age of 75.
What services does Dr. Zachary M. Baker bill to Medicare?
In 2024, Dr. Baker's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Show 4 more questionsShow fewer questions
Where did Dr. Zachary M. Baker go to medical school?
Dr. Baker graduated from Michigan State University College of Osteopathic Medicine in 2014.
What drugs does Dr. Zachary M. Baker prescribe most?
In 2024 Medicare Part D data, Dr. Baker's most prescribed drugs by claims were Prednisone, Naproxen and Ondansetron ODT.
Has Dr. Zachary M. Baker received payments from drug or device companies?
CMS Open Payments shows $123 in general payments to Dr. Baker from 1 company from 2022 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Zachary M. Baker been practicing?
Dr. Baker graduated from medical school in 2014, 12 years ago.
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