Dr. Paul L. Willis, MD
- Medicare services, 2024
- 518
- Medicare patients, 2024
- 414
- Part D claims, 2024
- 255
- Hospital affiliations
- 1
- Medical groups
- 4
- Practice address
- 200 Groton Rd, Ayer, MA 01432
- Practice phone
- Call (978) 784-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nashoba Valley Medical Center (CLOSED)
Ayer, Massachusetts
Find Dr. Willis' professional email, personal email and mobile number
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Dr. Paul L. Willis is an emergency medicine physician in Ayer, Massachusetts
Dr. Willis practices at Nashoba Valley Medical Center (CLOSED) in Ayer, Massachusetts.
Dr. Willis' NPI, 1184614703, was assigned on October 25, 2005. Dr. Willis graduated from George Washington University School of Medicine in 1994. Dr. Willis holds Massachusetts license 151956.
- NPI
- 1184614703NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951353291
- NPI enumeration date
- October 25, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 784-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Paul L. Willis practices at Nashoba Valley Medical Center (CLOSED) in Ayer, Massachusetts
Dr. Willis' primary practice is Nashoba Valley Medical Center (CLOSED), at 200 Groton Rd, Ayer, MA 01432 in Middlesex County. The practice phone is (978) 784-9000.
- Nashoba Valley Medical Center (CLOSED)200 Groton Rd, Ayer, MA 01432 · Middlesex CountyPhone(978) 784-9000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Paul L. Willis is affiliated with 4 sites of care and 4 medical groups
Dr. Willis' primary practice is Nashoba Valley Medical Center (CLOSED) in Ayer, Massachusetts. Dr. Willis is also affiliated with Falmouth Hospital. The medical group on file is Nashoba Valley Medical Center. Dmand AI also links Dr. Willis to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Paul L. Willis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nashoba Valley Medical Center (CLOSED) | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Paul L. Willis is one of 1,483 emergency medicine physicians in Massachusetts
Emergency medicine is Dr. Willis' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Willis is licensed in Massachusetts.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
Emergency medicine physicians near Dr. Willis
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. Paul L. Willis billed Medicare for 518 services in 2024
CMS data shows 518 Medicare services from Dr. Willis across 5 procedure codes in 2024, for 414 Medicare patients. Medicare paid $50,286 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Willis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5142024: 42118%
- Tests and treatments
- 2023: 992024: 972%
Dr. Willis compared with the Massachusetts median for emergency medicine physicians, 2024
- Dr. Willis
- Massachusetts median
- Medicare services
- 518vs 34152% above
- Medicare patients
- 414vs 33723% above
- Part D claims
- 130vs 363.6 times
Medians across 1,477 emergency medicine physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Willis' 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. Paul L. Willis treated 414 Medicare patients in 2024, average age 73
CMS counts 414 Medicare patients who saw Dr. Willis in 2024. The largest group is 75 to 84, with 151 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 43% are also on Medicaid. Their average risk score is 1.83, 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. Willis' median patient age at 72, with 57% women.
Dr. Willis' Medicare patients by age, 2024
Dr. Willis' Medicare patients by sex, 2024
- Women23457%
- Men18043%
Chronic conditions among Dr. Willis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders49%
- Anxiety48%
- Arthritis47%
- Depression43%
- Diabetes37%
- Ischemic heart disease37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Willis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Paul L. Willis wrote 255 Medicare Part D claims in 2024
In 2024, Dr. Willis wrote 255 Medicare Part D claims for 193 patients. 91% of them were for generic drugs. CMS names the drug for 130 of them, across 7 drugs with 11 or more claims each, at $700 in total drug cost. In 2023, CMS named 153 claims across 6 drugs.
Dr. Willis' Part D claims by kind of drug, 2024
- Generic233 claims91%
- Brand-name22 claims9%
Dr. Willis' 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. Willis' Part D claims, 2024
- Opioids8%21 of 255 claims
- Antibiotics35%89 of 255 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: 1532024: 13015%
Drugs named by CMS: 7 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. Paul L. Willis takes part in Medicare
Dr. Willis 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. Paul L. Willis graduated from George Washington University School of Medicine
Dr. Willis graduated from George Washington University School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Paul L. Willis'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 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) |
| 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. Paul L. Willis
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. Paul L. Willis' NPI number?
Dr. Paul L. Willis' NPI number is 1184614703. It was assigned on October 25, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Paul L. Willis?
Dr. Paul L. Willis is an emergency medicine physician in Ayer, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Paul L. Willis practice?
Dr. Willis practices at 200 Groton Rd, Ayer, MA 01432. Dr. Willis' primary practice is Nashoba Valley Medical Center (CLOSED) in Ayer, Massachusetts. Dmand AI also links Dr. Willis to 3 medical groups and 2 group practices and clinics.
What is Dr. Paul L. Willis' office phone number?
The practice phone on file for Dr. Willis is (978) 784-9000.
What is Dr. Paul L. Willis' medical license number?
Dr. Willis holds Massachusetts license 151956.
Which hospitals is Dr. Paul L. Willis affiliated with?
Dr. Willis is affiliated with Falmouth Hospital.
What medical group is Dr. Paul L. Willis part of?
Dr. Willis is linked to Nashoba Valley Medical Center. Dmand AI links Dr. Willis to 3 more medical groups.
Does Dr. Paul L. Willis accept Medicare?
Yes. CMS data shows Dr. Willis billed Medicare for 518 services in 2024, and Dr. Willis accepts Medicare assignment.
How many Medicare patients does Dr. Paul L. Willis see?
CMS counts 414 Medicare patients who saw Dr. Willis in 2024, with an average age of 73.
What services does Dr. Paul L. Willis bill to Medicare?
In 2024, Dr. Willis' most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93010).
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Where did Dr. Paul L. Willis go to medical school?
Dr. Willis graduated from George Washington University School of Medicine in 1994.
What drugs does Dr. Paul L. Willis prescribe most?
In 2024 Medicare Part D data, Dr. Willis' most prescribed drugs by claims were Cephalexin, Prednisone and Ondansetron ODT.
How long has Dr. Paul L. Willis been practicing?
Dr. Willis graduated from medical school in 1994, 32 years ago.
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