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Dr. Mac Ward Chamberlin, MD
NPI1881085439PAC ID2961830120
- Medicare services, 2023
- 58
- Publications
- 1
- MIPS score, 2024
- 84
- Hospital affiliations
- 2
- Medical groups
- 3
- Practice address
- 1808 W Main St, Russellville, AR 72801
- Practice phone
- Call (479) 968-2841
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Saint Marys Regional Medical Center (AR)
Russellville, Arkansas
Find Dr. Chamberlin'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. Mac Ward Chamberlin is an emergency medicine physician in Russellville, Arkansas
Dr. Chamberlin practices at Saint Marys Regional Medical Center (AR) in Russellville, Arkansas.
Dr. Chamberlin's NPI, 1881085439, was assigned on February 17, 2015. Dr. Chamberlin graduated from Feinberg School of Medicine in 2017. Dr. Chamberlin holds California license A159057.
NPI and contact details
- NPI
- 1881085439NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961830120
- NPI enumeration date
- February 17, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (479) 968-2841
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mac Ward Chamberlin practices at Saint Marys Regional Medical Center (AR) in Russellville, Arkansas
Dr. Chamberlin's primary practice is Saint Marys Regional Medical Center (AR), at 1808 W Main St, Russellville, AR 72801 in Pope County. The practice phone is (479) 968-2841.
- Saint Marys Regional Medical Center (AR)1808 W Main St, Russellville, AR 72801 · Pope CountyPhone(479) 968-2841
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mac Ward Chamberlin is affiliated with 3 sites of care and 3 medical groups
Dr. Chamberlin's primary practice is Saint Marys Regional Medical Center (AR) in Russellville, Arkansas. Dr. Chamberlin is also affiliated with Saint Mary's Regional Health. The medical group on file is Southeastern Emergency Physicians. Dmand AI also links Dr. Chamberlin to 1 more hospital and 2 medical groups, each named with a free account.
Saint Marys Regional Medical Center (AR)Primary
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. Mac Ward Chamberlin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chamberlin practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Marys Regional Medical Center (AR) | 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. Mac Ward Chamberlin is one of 403 emergency medicine physicians in Arkansas
Emergency medicine is Dr. Chamberlin's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chamberlin is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Chamberlin's licenses on file in 3 states: California, Illinois and Arkansas.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Student in an organized health care education/training program, Illinois
- Arkansas license
Emergency medicine physicians near Dr. Chamberlin
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
403emergency medicine physicians in Arkansas
6emergency medicine physicians in Russellville
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mac Ward Chamberlin billed Medicare for 58 services in 2023
CMS data shows 58 Medicare services from Dr. Chamberlin across 2 procedure codes in 2023. Medicare paid $5,068 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202358
Paid by Medicare$5,068
Procedure codes2
Dr. Chamberlin's Medicare services by type, 2021 to 2023
- 2021
- 2023
- Office and hospital visits
- 2021: 152023: 40167%
- Tests and treatments
- 2021: 02023: 18
Dr. Chamberlin compared with the Arkansas median for emergency medicine physicians, 2023
- Dr. Chamberlin
- Arkansas median
- Medicare services
- 58vs 41486% below
Medians across 424 emergency medicine physicians in Arkansas with Dmand AI profiles that report each measure.
Dr. Chamberlin's most billed Medicare procedure codes, 2023
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. Chamberlin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chamberlin and other emergency medicine physicians in Arkansas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mac Ward Chamberlin's patients have a median age of 45
Across all payers, Dmand AI patient panel data puts Dr. Chamberlin's median patient age at 45, with 60% women.
Dr. Chamberlin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Mac Ward Chamberlin scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Chamberlin for performance year 2024, reported as part of a group. Dr. Chamberlin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chamberlin's MIPS scores, performance year 2024
- 84of 100Final score
- 99.8of 100Quality
- 0of 100Improvement Activities
- 79of 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. Mac Ward Chamberlin has 1 publication on record
Dmand AI links 1 paper to Dr. Chamberlin in 2021. Dr. Chamberlin's most frequent co-authors are Erik Sorem Anderson, MD, Kathryn Frances Hawk, MD and Andrew Avery Herring, MD.
Papers1
Dr. Chamberlin's most frequent co-authors
- Erik Sorem Anderson, MD1 shared paper
- Kathryn Frances Hawk, MD1 shared paper
- Andrew Avery Herring, MD1 shared paper
Recent publications by Dr. Chamberlin
See who Dr. Chamberlin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chamberlin 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. Mac Ward Chamberlin graduated from Feinberg School of Medicine
Dr. Chamberlin graduated from Feinberg School of Medicine in 2017.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Mac Ward Chamberlin accepts plans from 1 insurance carrier
Dr. Chamberlin is in network with 1 carrier, including AR State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
- AR State Medicaid
Source: Dmand AI Insurance Network Data
Sources for Dr. Mac Ward Chamberlin'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 Data |
| 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 |
| 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. Mac Ward Chamberlin
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. Mac Ward Chamberlin's NPI number?
Dr. Mac Ward Chamberlin's NPI number is 1881085439. It was assigned on February 17, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Mac Ward Chamberlin?
Dr. Mac Ward Chamberlin is an emergency medicine physician in Russellville, Arkansas. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mac Ward Chamberlin practice?
Dr. Chamberlin practices at 1808 W Main St, Russellville, AR 72801. Dr. Chamberlin's primary practice is Saint Marys Regional Medical Center (AR) in Russellville, Arkansas. Dmand AI also links Dr. Chamberlin to 1 hospital and 2 medical groups.
What is Dr. Mac Ward Chamberlin's office phone number?
The practice phone on file for Dr. Chamberlin is (479) 968-2841.
What is Dr. Mac Ward Chamberlin's medical license number?
Dr. Chamberlin holds California license A159057, one of the licenses on file in 3 states.
Which states has Dr. Mac Ward Chamberlin been licensed in?
Dmand AI has state licenses on file for Dr. Chamberlin in California (2018 to 2026), Illinois and Arkansas (2023 to 2026).
Which hospitals is Dr. Mac Ward Chamberlin affiliated with?
Dr. Chamberlin is affiliated with Saint Mary's Regional Health. Dmand AI links Dr. Chamberlin to 1 more hospital.
What medical group is Dr. Mac Ward Chamberlin part of?
Dr. Chamberlin is linked to Southeastern Emergency Physicians. Dmand AI links Dr. Chamberlin to 2 more medical groups.
Does Dr. Mac Ward Chamberlin accept Medicare?
Yes. CMS data shows Dr. Chamberlin billed Medicare for 58 services in 2023, and Dr. Chamberlin accepts Medicare assignment.
What is Dr. Mac Ward Chamberlin's MIPS score?
Dr. Chamberlin's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
Is Dr. Mac Ward Chamberlin board certified?
Yes. Dr. Chamberlin is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Mac Ward Chamberlin bill to Medicare?
In 2023, Dr. Chamberlin's most billed Medicare services were emergency department visit (99285) and heart test or procedure (93010).
Where did Dr. Mac Ward Chamberlin go to medical school?
Dr. Chamberlin graduated from Feinberg School of Medicine in 2017.
How long has Dr. Mac Ward Chamberlin been practicing?
Dr. Chamberlin graduated from medical school in 2017, 9 years ago.
Does Dr. Mac Ward Chamberlin do research?
Dmand AI links 1 publication to Dr. Chamberlin.
Who does Dr. Mac Ward Chamberlin publish with?
Dr. Chamberlin's most frequent co-authors are Erik Sorem Anderson, MD (1 shared paper), Kathryn Frances Hawk, MD (1 shared paper) and Andrew Avery Herring, MD (1 shared paper).
What insurance does Dr. Mac Ward Chamberlin accept?
Dr. Chamberlin is in network with 1 carrier, including AR State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
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