Dr. William Warren Phillips, MD
- Medicare services, 2024
- 64
- Medicare patients, 2024
- 46
- Part D claims, 2024
- 11
- MIPS score, 2024
- 100
- Hospital affiliations
- 5
- Practice address
- 55 Lake N Ave, Worcester, MA 01605
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Group Inc
Worcester, Massachusetts
Find Dr. Phillips' 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. William Warren Phillips is a cardiothoracic surgeon in Worcester, Massachusetts
Dr. Phillips practices at Umass Memorial Medical Group Inc in Worcester, Massachusetts.
Dr. Phillips' NPI, 1609260793, was assigned on March 26, 2015. Dr. Phillips graduated from Rush Medical College of Rush University in 2015. Dr. Phillips holds Massachusetts license 275008.
- NPI
- 1609260793NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648556548
- NPI enumeration date
- March 26, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Warren Phillips practices at Umass Memorial Medical Group Inc in Worcester, Massachusetts
Dr. Phillips' primary practice is Umass Memorial Medical Group Inc, at 55 Lake N Ave, Worcester, MA 01605 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Group Inc55 Lake N Ave, Worcester, MA 01605 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Warren Phillips is affiliated with 7 sites of care and 1 medical group
Dr. Phillips' primary practice is Umass Memorial Medical Group Inc in Worcester, Massachusetts. Dr. Phillips is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Phillips to 4 more hospitals and 1 group practice or clinic, 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. William Warren Phillips' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phillips practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Group Inc | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Warren Phillips is one of 166 cardiothoracic surgeons in Massachusetts
Thoracic surgery (cardiothoracic vascular surgery) is Dr. Phillips' primary specialty in the NPI Registry, under taxonomy code 208G00000X. Dr. Phillips is licensed in Massachusetts.
Specialties and state licenses
- Thoracic surgery (cardiothoracic vascular surgery), MassachusettsPrimary
Cardiothoracic surgeons near Dr. Phillips
Counts of cardiothoracic surgeons 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. William Warren Phillips billed Medicare for 64 services in 2024
CMS data shows 64 Medicare services from Dr. Phillips across 1 procedure code in 2024, for 46 Medicare patients. Medicare paid $2,492 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Phillips compared with the Massachusetts median for cardiothoracic surgeons, 2024
- Dr. Phillips
- Massachusetts median
- Medicare services
- 64vs 19367% below
- Medicare patients
- 46vs 15270% below
- Part D claims
- 34vs 1979% above
Medians across 131 cardiothoracic surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Phillips' 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. Phillips and other cardiothoracic surgeons in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Warren Phillips treated 46 Medicare patients in 2024, average age 74
CMS counts 46 Medicare patients who saw Dr. Phillips in 2024. The largest group is 65 to 74, with 20 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.87, 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. Phillips' median patient age at 71, with 53% women.
Dr. Phillips' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Phillips' Medicare patients by sex, 2024
- Women2554%
- Men2146%
Chronic conditions among Dr. Phillips' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- COPD59%
- Anxiety57%
- Cancer57%
- Mood disorders43%
- Depression39%
- Ischemic heart disease39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Phillips' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Warren Phillips wrote 11 Medicare Part D claims in 2024
In 2024, Dr. Phillips wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $66 in total drug cost. In 2018, CMS named 20 claims across 1 drug.
Dr. Phillips' most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2021
- 2018
- 2021
- Claims for drugs CMS names
- 2018: 202021: 3470%
Drugs named by CMS: 1 in 2021, 1 in 2018.
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. William Warren Phillips scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Phillips for performance year 2024, reported through an alternative payment model (APM). Dr. Phillips accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Phillips as offering telehealth. CMS counts 13 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Phillips, more than 45% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Phillips' MIPS scores, performance year 2024
- 100of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Phillips ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 45th percentile13 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. William Warren Phillips received $16 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Phillips from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $16.
Companies that paid Dr. Phillips 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. William Warren Phillips graduated from Rush Medical College of Rush University
Dr. Phillips graduated from Rush Medical College of Rush University in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Warren Phillips'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. William Warren Phillips
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. William Warren Phillips' NPI number?
Dr. William Warren Phillips' NPI number is 1609260793. It was assigned on March 26, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. William Warren Phillips?
Dr. William Warren Phillips is a cardiothoracic surgeon in Worcester, Massachusetts. The primary specialty in the NPI Registry is Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (taxonomy code 208G00000X).
Where does Dr. William Warren Phillips practice?
Dr. Phillips practices at 55 Lake N Ave, Worcester, MA 01605. Dr. Phillips' primary practice is Umass Memorial Medical Group Inc in Worcester, Massachusetts. Dmand AI also links Dr. Phillips to 4 hospitals and 1 group practice or clinic.
What is Dr. William Warren Phillips' office phone number?
The practice phone on file for Dr. Phillips is (508) 334-1000.
What is Dr. William Warren Phillips' medical license number?
Dr. Phillips holds Massachusetts license 275008.
Which hospitals is Dr. William Warren Phillips affiliated with?
Dr. Phillips is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Phillips to 4 more hospitals.
What medical group is Dr. William Warren Phillips part of?
Dr. Phillips is linked to UMass Memorial Medical Group.
Does Dr. William Warren Phillips accept Medicare?
Yes. CMS data shows Dr. Phillips billed Medicare for 64 services in 2024, and Dr. Phillips accepts Medicare assignment.
Does Dr. William Warren Phillips offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Phillips as offering telehealth services.
What is Dr. William Warren Phillips' MIPS score?
Dr. Phillips' MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. William Warren Phillips see?
CMS counts 46 Medicare patients who saw Dr. Phillips in 2024, with an average age of 74.
What services does Dr. William Warren Phillips bill to Medicare?
In 2024, Dr. Phillips' most billed Medicare services were hospital inpatient care (99231).
Where did Dr. William Warren Phillips go to medical school?
Dr. Phillips graduated from Rush Medical College of Rush University in 2015.
What drugs does Dr. William Warren Phillips prescribe most?
In 2021 Medicare Part D data, Dr. Phillips' most prescribed drugs by claims were Oxycodone HCl.
Has Dr. William Warren Phillips received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Phillips from 1 company from 2018 to 2018. The largest total came from Amgen Inc.
How long has Dr. William Warren Phillips been practicing?
Dr. Phillips graduated from medical school in 2015, 11 years ago.
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