Ann Emerg Med
Dr. Preston Charles Maxim, MD
- Medicare services, 2024
- 74
- Medicare patients, 2024
- 82
- Part D claims, 2024
- 127
- Publications
- 2
- MIPS score, 2024
- 89
- Practice address
- 2200 East Show Low Lake Road, Show Low, AZ 85901
- Practice phone
- Call (928) 537-4375
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Maxim'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. Preston Charles Maxim is an emergency medicine physician in Show Low, Arizona
Dr. Maxim practices at Summit Healthcare Regional Medical Center in Show Low, Arizona, part of Summit Healthcare.
Dr. Maxim's NPI, 1427090042, was assigned on June 11, 2006. Dr. Maxim graduated from University Of Washington School Of Medicine in 1995. Dr. Maxim holds California license A70159.
- NPI
- 1427090042NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860564598
- NPI enumeration date
- June 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (928) 537-4375
- 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. Preston Charles Maxim practices at Summit Healthcare Regional Medical Center in Show Low, Arizona
Dr. Maxim's primary practice is Summit Healthcare Regional Medical Center, at 2200 East Show Low Lake Road, Show Low, AZ 85901 in Navajo County. The practice phone is (928) 537-4375.
- Summit Healthcare Regional Medical Center2200 East Show Low Lake Road, Show Low, AZ 85901 · Navajo CountyPhone(928) 537-4375
Source: Dmand AI Affiliation Data
Dr. Preston Charles Maxim is affiliated with 3 sites of care and 7 medical groups
Dr. Maxim's primary practice is Summit Healthcare Regional Medical Center in Show Low, Arizona, part of Summit Healthcare. Dr. Maxim is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. The medical group on file is Innova Emergency Medical Associates. Dmand AI also links Dr. Maxim to 1 more hospital and 6 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. Preston Charles Maxim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maxim practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Healthcare Regional Medical Center | Available with a free account |
| +2 more sites and 6 medical groups | 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 Summit Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Preston Charles Maxim is one of 1,360 emergency medicine physicians in Arizona
Emergency medicine is Dr. Maxim's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Maxim is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Maxim's licenses on file in 3 states: California, New Mexico and Arizona.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- New Mexico license
- Arizona license
Emergency medicine physicians near Dr. Maxim
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. Preston Charles Maxim billed Medicare for 74 services in 2024
CMS data shows 74 Medicare services from Dr. Maxim across 3 procedure codes in 2024, for 82 Medicare patients. Medicare paid $6,381 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Maxim's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 792024: 746%
Dr. Maxim compared with the Arizona median for emergency medicine physicians, 2024
- Dr. Maxim
- Arizona median
- Medicare services
- 74vs 21666% below
- Medicare patients
- 82vs 21061% below
- Part D claims
- 43vs 5014% below
Medians across 1,326 emergency medicine physicians in Arizona with Dmand AI profiles that report each measure.
Dr. Maxim'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maxim and other emergency medicine physicians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Preston Charles Maxim treated 82 Medicare patients in 2024, average age 71
CMS counts 82 Medicare patients who saw Dr. Maxim in 2024. The largest group is 65 to 74, with 31 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.72, 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. Maxim's median patient age at 49, with 49% women.
Dr. Maxim's Medicare patients by age, 2024
Dr. Maxim's Medicare patients by sex, 2024
- Women3948%
- Men4352%
Chronic conditions among Dr. Maxim's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Diabetes55%
- Arthritis49%
- Chronic kidney disease35%
- Ischemic heart disease30%
- Mood disorders30%
- Heart failure29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maxim's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women49%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Preston Charles Maxim wrote 127 Medicare Part D claims in 2024
In 2024, Dr. Maxim wrote 127 Medicare Part D claims for 92 patients. 96% of them were for generic drugs. CMS names the drug for 43 of them, across 3 drugs with 11 or more claims each, at $371 in total drug cost. In 2023, CMS named 17 claims across 1 drug.
Dr. Maxim's Part D claims by kind of drug, 2024
- Generic122 claims96%
- Brand-name and other5 claims4%
Dr. Maxim'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. Maxim's Part D claims, 2024
- Antibiotics23%29 of 127 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: 172024: 43153%
Drugs named by CMS: 3 in 2024, 1 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. Preston Charles Maxim scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Maxim for performance year 2024, reported as part of a group. Dr. Maxim accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Maxim's MIPS scores, performance year 2024
- 89of 100Final score
- 76.9of 100Quality
- 76of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Preston Charles Maxim has 2 publications on record
Dmand AI links 2 papers to Dr. Maxim in 2012. Dr. Maxim's most frequent co-authors are Jason S. Haukoos, MD, James F. Holmes, MD, MPH and Craig D. Newgard, MD, MPH.
Dr. Maxim's most frequent co-authors
- Jason S. Haukoos, MD1 shared paper
- James F. Holmes, MD, MPH1 shared paper
- Craig D. Newgard, MD, MPH1 shared paper
Recent publications by Dr. Maxim
See who Dr. Maxim researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Maxim works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Preston Charles Maxim received $241 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Maxim from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Vapotherm Inc paid the most, $241.
Companies that paid Dr. Maxim the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Preston Charles Maxim graduated from University Of Washington School Of Medicine
Dr. Maxim graduated from University Of Washington School Of Medicine in 1995.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Preston Charles Maxim accepts plans from 5 insurance carriers
Dr. Maxim is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and Regence Health Plans. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Blue Cross Blue Shield of Arizona
- CMS Medicare
Plan types Dr. Maxim accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Preston Charles Maxim'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)Clinician Public Reporting: Overall MIPS Performance (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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Preston Charles Maxim
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. Preston Charles Maxim's NPI number?
Dr. Preston Charles Maxim's NPI number is 1427090042. It was assigned on June 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Preston Charles Maxim?
Dr. Preston Charles Maxim is an emergency medicine physician in Show Low, Arizona. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Preston Charles Maxim practice?
Dr. Maxim practices at 2200 East Show Low Lake Road, Show Low, AZ 85901. Dr. Maxim's primary practice is Summit Healthcare Regional Medical Center in Show Low, Arizona, part of Summit Healthcare. Dmand AI also links Dr. Maxim to 1 hospital and 6 medical groups.
What is Dr. Preston Charles Maxim's office phone number?
The practice phone on file for Dr. Maxim is (928) 537-4375.
What is Dr. Preston Charles Maxim's medical license number?
Dr. Maxim holds California license A70159, one of the licenses on file in 3 states.
Which states has Dr. Preston Charles Maxim been licensed in?
Dmand AI has state licenses on file for Dr. Maxim in California (1999 to 2027), New Mexico (2016 to 2026) and Arizona (2019 to 2025).
Which hospitals is Dr. Preston Charles Maxim affiliated with?
Dr. Maxim practices at Summit Healthcare Regional Medical Center in Show Low, Arizona. Dr. Maxim is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. Dmand AI links Dr. Maxim to 1 more hospital.
What medical group is Dr. Preston Charles Maxim part of?
Dr. Maxim is linked to Innova Emergency Medical Associates. Dmand AI links Dr. Maxim to 6 more medical groups.
Does Dr. Preston Charles Maxim accept Medicare?
Yes. CMS data shows Dr. Maxim billed Medicare for 74 services in 2024, and Dr. Maxim accepts Medicare assignment.
What is Dr. Preston Charles Maxim's MIPS score?
Dr. Maxim's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Preston Charles Maxim see?
CMS counts 82 Medicare patients who saw Dr. Maxim in 2024, with an average age of 71.
Is Dr. Preston Charles Maxim board certified?
Yes. Dr. Maxim is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Preston Charles Maxim bill to Medicare?
In 2024, Dr. Maxim's most billed Medicare services were emergency department visit (99284), emergency department visit (99283) and emergency department visit (99285).
Where did Dr. Preston Charles Maxim go to medical school?
Dr. Maxim graduated from University Of Washington School Of Medicine in 1995.
What drugs does Dr. Preston Charles Maxim prescribe most?
In 2024 Medicare Part D data, Dr. Maxim's most prescribed drugs by claims were Ibuprofen, Naproxen and Cephalexin.
Has Dr. Preston Charles Maxim received payments from drug or device companies?
CMS Open Payments shows $241 in general payments to Dr. Maxim from 1 company from 2018 to 2018. The largest total came from Vapotherm Inc.
How long has Dr. Preston Charles Maxim been practicing?
Dr. Maxim graduated from medical school in 1995, 31 years ago.
Does Dr. Preston Charles Maxim do research?
Dmand AI links 2 publications to Dr. Maxim.
Who does Dr. Preston Charles Maxim publish with?
Dr. Maxim's most frequent co-authors are Jason S. Haukoos, MD (1 shared paper), James F. Holmes, MD, MPH (1 shared paper) and Craig D. Newgard, MD, MPH (1 shared paper).
What insurance does Dr. Preston Charles Maxim accept?
Dr. Maxim is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and Regence Health Plans. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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