Erin K. MacMillan, PA-C
- Medicare services, 2024
- 233
- Medicare patients, 2024
- 162
- Part D claims, 2024
- 206
- MIPS score, 2024
- 84
- Hospital affiliations
- 6
- Practice address
- 100 Sentara Circle, Williamsburg, VA 23188
- Practice phone
- Call (757) 984-7409
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sentara Williamsburg Regional - Unit
Acute Care Hospital-Unit · Williamsburg, Virginia
Find Erin MacMillan'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.
Erin K. MacMillan is a surgical physician assistant in Williamsburg, Virginia
Erin MacMillan practices at Sentara Williamsburg Regional - Unit in Williamsburg, Virginia.
Erin MacMillan's NPI, 1598188682, was assigned on January 27, 2014. Erin MacMillan holds Virginia license 0110004488.
- NPI
- 1598188682NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072746767
- NPI enumeration date
- January 27, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (757) 984-7409
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Erin K. MacMillan practices at Sentara Williamsburg Regional - Unit in Williamsburg, Virginia
Erin MacMillan's primary practice is Sentara Williamsburg Regional - Unit, at 100 Sentara Circle, Williamsburg, VA 23188 in James City. The practice phone is (757) 984-7409.
- Sentara Williamsburg Regional - Unit100 Sentara Circle, Williamsburg, VA 23188 · James CityPhone(757) 984-7409
Source: Dmand AI Affiliation Data
Erin K. MacMillan is affiliated with 6 sites of care and 1 medical group
Erin MacMillan's primary practice is Sentara Williamsburg Regional - Unit in Williamsburg, Virginia. Erin MacMillan is also affiliated with Sentara Williamsburg Regional Medical Center. The medical group on file is MCV Physicians. Dmand AI also links Erin MacMillan to 4 more hospitals, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Erin K. MacMillan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Erin MacMillan practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sentara Williamsburg Regional - Unit | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Erin K. MacMillan is one of 239 surgical physician assistants in Virginia
Surgical is Erin MacMillan's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Erin MacMillan is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Erin MacMillan is licensed in Virginia.
Specialties and state licenses
- Surgical physician assistant, VirginiaPrimary
Clinical focus
Dmand AI lists pleural effusion and tobacco use among the conditions Erin MacMillan treats.
Surgical physician assistants near Erin MacMillan
Counts of surgical physician assistants 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
Erin K. MacMillan billed Medicare for 233 services in 2024
CMS data shows 233 Medicare services from Erin MacMillan across 3 procedure codes in 2024, for 162 Medicare patients. Medicare paid $11,695 for them. Every service was in an office.
Erin MacMillan's Medicare services by type, 2024
- Office and hospital visits190
- Other services43
Erin MacMillan compared with the Virginia median for surgical physician assistants, 2024
- Erin MacMillan
- Virginia median
- Medicare patients
- 162vs 11245% above
Medians across 147 surgical physician assistants in Virginia with Dmand AI profiles that report each measure.
Erin MacMillan'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 Erin MacMillan and other surgical physician assistants in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Erin K. MacMillan treated 162 Medicare patients in 2024, average age 75
CMS counts 162 Medicare patients who saw Erin MacMillan in 2024. The largest group is 75 to 84, with 76 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.84, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Erin MacMillan's median patient age at 73, with 53% women.
Erin MacMillan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Erin MacMillan's Medicare patients by sex, 2024
- Women9357%
- Men6943%
Chronic conditions among Erin MacMillan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer60%
- Arthritis51%
- Ischemic heart disease41%
- COPD40%
- Diabetes31%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
Erin MacMillan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Erin K. MacMillan wrote 206 Medicare Part D claims in 2024
In 2024, Erin MacMillan wrote 206 Medicare Part D claims for 95 patients. 97% of them were for generic drugs. CMS names the drug for 105 of them, across 4 drugs with 11 or more claims each, at $1,331 in total drug cost.
Erin MacMillan's Part D claims by kind of drug, 2024
- Generic200 claims97%
- Brand-name and other6 claims3%
Erin MacMillan'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 Erin MacMillan's Part D claims, 2024
- Opioids16%32 of 206 claims
- Antibiotics9%19 of 206 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Erin K. MacMillan 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 Erin MacMillan for performance year 2024, reported as part of a group. Erin MacMillan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Erin MacMillan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Erin MacMillan's MIPS scores, performance year 2024
- 84of 100Final score
- 69.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 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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Erin K. MacMillan is board certified in certified physician assistant
Erin MacMillan is a member of AAPA.
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Erin K. MacMillan'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 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) |
| 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 Erin K. MacMillan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Erin K. MacMillan's NPI number?
Erin K. MacMillan's NPI number is 1598188682. It was assigned on January 27, 2014, and it is active in the NPI Registry.
What does Erin K. MacMillan specialize in?
Erin K. MacMillan is a surgical physician assistant in Williamsburg, Virginia. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Erin K. MacMillan practice?
Erin MacMillan practices at 100 Sentara Circle, Williamsburg, VA 23188. Erin MacMillan's primary practice is Sentara Williamsburg Regional - Unit in Williamsburg, Virginia. Dmand AI also links Erin MacMillan to 4 hospitals.
What is Erin K. MacMillan's office phone number?
The practice phone on file for Erin MacMillan is (757) 984-7409.
What is Erin K. MacMillan's medical license number?
Erin MacMillan holds Virginia license 0110004488.
Which hospitals is Erin K. MacMillan affiliated with?
Erin MacMillan is affiliated with Sentara Williamsburg Regional Medical Center. Dmand AI links Erin MacMillan to 5 more hospitals.
What medical group is Erin K. MacMillan part of?
Erin MacMillan is linked to MCV Physicians.
Does Erin K. MacMillan accept Medicare?
Yes. CMS data shows Erin MacMillan billed Medicare for 233 services in 2024, and Erin MacMillan accepts Medicare assignment.
Does Erin K. MacMillan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Erin MacMillan as offering telehealth services.
What is Erin K. MacMillan's MIPS score?
Erin MacMillan's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
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How many Medicare patients does Erin K. MacMillan see?
CMS counts 162 Medicare patients who saw Erin MacMillan in 2024, with an average age of 75.
Is Erin K. MacMillan board certified?
Yes. Erin MacMillan is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Erin K. MacMillan bill to Medicare?
In 2024, Erin MacMillan's most billed Medicare services were office visit, established patient (99213), medicare service (G2211) and office visit, established patient (99214).
What drugs does Erin K. MacMillan prescribe most?
In 2024 Medicare Part D data, Erin MacMillan's most prescribed drugs by claims were Pantoprazole Sodium, Famotidine and Oxycodone HCl.
How long has Erin K. MacMillan been practicing?
Erin MacMillan graduated from medical school in 2013, 13 years ago.
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