Dr. Catherine Stoia Parker, MD
- Medicare services, 2024
- 655
- Medicare patients, 2024
- 381
- Part D claims, 2024
- 213
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 2014 Washington Street, Newton, MA 02462
- Practice phone
- Call (617) 243-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Catherine Stoia Parker is an internist in Newton Lower Falls, Massachusetts
Dr. Parker practices at Newton-Wellesley Hospital in Newton, Massachusetts, part of Mass General Brigham.
Dr. Parker's NPI, 1912165036, was assigned on May 27, 2008. Dr. Parker graduated from Perelman School of Med at the University of Pennsylvania in 2007. Dr. Parker holds Massachusetts license 232064.
- NPI
- 1912165036NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406033554
- NPI enumeration date
- May 27, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 243-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine Stoia Parker practices at Newton-Wellesley Hospital in Newton, Massachusetts
Dr. Parker's primary practice is Newton-Wellesley Hospital, at 2014 Washington Street, Newton, MA 02462 in Middlesex County. The practice phone is (617) 243-6000.
- Newton-Wellesley Hospital2014 Washington Street, Newton, MA 02462 · Middlesex CountyPhone(617) 243-6000
Source: Dmand AI Affiliation Data
Dr. Catherine Stoia Parker is affiliated with 3 sites of care and 1 medical group
Dr. Parker's primary practice is Newton-Wellesley Hospital in Newton, Massachusetts, part of Mass General Brigham. The medical group on file is Mass General Brigham Medical Group. Dmand AI also links Dr. Parker to 1 more hospice and 1 hospital outpatient department, 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. Catherine Stoia Parker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Parker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Newton-Wellesley Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Catherine Stoia Parker is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Parker's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Parker is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Parker
Counts of internists 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. Catherine Stoia Parker billed Medicare for 655 services in 2024
CMS data shows 655 Medicare services from Dr. Parker across 7 procedure codes in 2024, for 381 Medicare patients. Medicare paid $61,026 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Parker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8202024: 65520%
Dr. Parker compared with the Massachusetts median for internists, 2024
- Dr. Parker
- Massachusetts median
- Medicare services
- 655vs 43152% above
- Medicare patients
- 381vs 19496% above
- Part D claims
- 58vs 40286% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Parker'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine Stoia Parker treated 381 Medicare patients in 2024, average age 81
CMS counts 381 Medicare patients who saw Dr. Parker in 2024. The largest group is 85 and over, with 153 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 2.14, 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. Parker's median patient age at 79, with 58% women.
Dr. Parker's Medicare patients by age, 2024
Dr. Parker's Medicare patients by sex, 2024
- Women23662%
- Men14538%
Chronic conditions among Dr. Parker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease52%
- Anxiety49%
- Chronic kidney disease48%
- Mood disorders48%
- Atrial fibrillation47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Parker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Catherine Stoia Parker wrote 213 Medicare Part D claims in 2024
In 2024, Dr. Parker wrote 213 Medicare Part D claims for 76 patients. 86% of them were for generic drugs. CMS names the drug for 58 of them, across 4 drugs with 11 or more claims each, at $14,066 in total drug cost. In 2023, CMS named 100 claims across 7 drugs.
Dr. Parker's Part D claims by kind of drug, 2024
- Generic184 claims86%
- Brand-name29 claims14%
Dr. Parker'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. Parker's Part D claims, 2024
- Antibiotics11%24 of 213 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: 1002024: 5842%
Drugs named by CMS: 4 in 2024, 7 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. Catherine Stoia Parker takes part in Medicare
Dr. Parker 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. Catherine Stoia Parker graduated from Perelman School of Med at the University of Pennsylvania
Dr. Parker graduated from Perelman School of Med at the University of Pennsylvania in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Catherine Stoia Parker'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) |
| 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. Catherine Stoia Parker
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. Catherine Stoia Parker's NPI number?
Dr. Catherine Stoia Parker's NPI number is 1912165036. It was assigned on May 27, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine Stoia Parker?
Dr. Catherine Stoia Parker is an internist in Newton Lower Falls, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Catherine Stoia Parker practice?
Dr. Parker practices at 2014 Washington Street, Newton, MA 02462. Dr. Parker's primary practice is Newton-Wellesley Hospital in Newton, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Parker to 1 hospice and 1 hospital outpatient department.
What is Dr. Catherine Stoia Parker's office phone number?
The practice phone on file for Dr. Parker is (617) 243-6000.
What is Dr. Catherine Stoia Parker's medical license number?
Dr. Parker holds Massachusetts license 232064.
Which hospitals is Dr. Catherine Stoia Parker affiliated with?
Dr. Parker practices at Newton-Wellesley Hospital in Newton, Massachusetts.
What medical group is Dr. Catherine Stoia Parker part of?
Dr. Parker is linked to Mass General Brigham Medical Group.
Does Dr. Catherine Stoia Parker accept Medicare?
Yes. CMS data shows Dr. Parker billed Medicare for 655 services in 2024, and Dr. Parker accepts Medicare assignment.
How many Medicare patients does Dr. Catherine Stoia Parker see?
CMS counts 381 Medicare patients who saw Dr. Parker in 2024, with an average age of 81.
What services does Dr. Catherine Stoia Parker bill to Medicare?
In 2024, Dr. Parker's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
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Where did Dr. Catherine Stoia Parker go to medical school?
Dr. Parker graduated from Perelman School of Med at the University of Pennsylvania in 2007.
What drugs does Dr. Catherine Stoia Parker prescribe most?
In 2024 Medicare Part D data, Dr. Parker's most prescribed drugs by claims were Eliquis, Metoprolol Succinate and Amiodarone HCl.
How long has Dr. Catherine Stoia Parker been practicing?
Dr. Parker graduated from medical school in 2007, 19 years ago.
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