Dr. Ruth Darcel Barnett, DO
- Medicare services, 2021
- 43
- Part D claims, 2024
- 431
- Industry payments
- $141
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 54 Main St, Lakeville, MA 02347
- Practice phone
- Call (313) 270-4450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ruth Barnett,DO
Lakeville, Massachusetts
Find Dr. Barnett's professional email, personal email and mobile number
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Dr. Ruth Darcel Barnett is a sleep medicine (internal medicine) physician in Lakeville, Massachusetts
Dr. Barnett practices at Ruth Barnett,DO in Lakeville, Massachusetts.
Dr. Barnett's NPI, 1306969944, was assigned on April 9, 2007. Dr. Barnett graduated from Michigan State University College of Osteopathic Medicine in 1985. Dr. Barnett holds Michigan license 5101009310.
- NPI
- 1306969944NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618923525
- NPI enumeration date
- April 9, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (313) 270-4450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruth Darcel Barnett practices at Ruth Barnett,DO in Lakeville, Massachusetts
Dr. Barnett's primary practice is Ruth Barnett,DO, at 54 Main St, Lakeville, MA 02347 in Plymouth County. The practice phone is (313) 270-4450.
- Ruth Barnett,DO54 Main St, Lakeville, MA 02347 · Plymouth CountyPhone(313) 270-4450
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ruth Darcel Barnett is affiliated with 2 sites of care
Dr. Barnett's primary practice is Ruth Barnett,DO in Lakeville, Massachusetts. Dmand AI also links Dr. Barnett to 1 physician office, 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. Ruth Darcel Barnett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barnett practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ruth Barnett,DO | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruth Darcel Barnett is one of 26 sleep medicine (internal medicine) physicians in Massachusetts
Internal medicine is Dr. Barnett's primary specialty in the NPI Registry, under taxonomy code 207RS0012X. The record also lists sleep medicine. Dr. Barnett is licensed in Michigan.
Specialties and state licenses
- Sleep medicine (internal medicine), MichiganPrimary
Sleep medicine (internal medicine) physicians near Dr. Barnett
Counts of sleep medicine (internal 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. Ruth Darcel Barnett billed Medicare for 43 services in 2021
CMS data shows 43 Medicare services from Dr. Barnett across 1 procedure code in 2021, all of them office visits. Medicare paid $3,207 for them. Every service was in an office.
Dr. Barnett's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 412021: 435%
Dr. Barnett compared with the Massachusetts median for sleep medicine (internal medicine) physicians, 2021
- Dr. Barnett
- Massachusetts median
- Medicare services
- 43vs 38189% below
- Part D claims
- 194vs 14732% above
Medians across 26 sleep medicine (internal medicine) physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Barnett's most billed Medicare procedure codes, 2021
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. Barnett?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barnett and other sleep medicine (internal medicine) physicians in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruth Darcel Barnett's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Barnett's median patient age at 63, with 51% women.
Dr. Barnett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women51%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Ruth Darcel Barnett wrote 431 Medicare Part D claims in 2024
In 2024, Dr. Barnett wrote 431 Medicare Part D claims for 28 patients. 90% of them were for generic drugs. CMS names the drug for 194 of them, across 10 drugs with 11 or more claims each, at $3,661 in total drug cost. In 2023, CMS named 232 claims across 14 drugs.
Dr. Barnett's Part D claims by kind of drug, 2024
- Generic388 claims90%
- Brand-name and other43 claims10%
Dr. Barnett'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. Barnett's Part D claims, 2024
- Opioids9%37 of 431 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: 2322024: 19416%
Drugs named by CMS: 10 in 2024, 14 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. Ruth Darcel Barnett takes part in Medicare
Dr. Barnett 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. Ruth Darcel Barnett received $141 in industry payments from 2018 to 2024
CMS Open Payments shows 2 general payments to Dr. Barnett from 2 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $111.
General payments to Dr. Barnett by program year, 2018 to 2024
Companies that paid Dr. Barnett the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruth Darcel Barnett graduated from Michigan State University College of Osteopathic Medicine
Dr. Barnett graduated from Michigan State University College of Osteopathic Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ruth Darcel Barnett'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 Data |
| 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) |
| 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. Ruth Darcel Barnett
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What is Dr. Ruth Darcel Barnett's NPI number?
Dr. Ruth Darcel Barnett's NPI number is 1306969944. It was assigned on April 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruth Darcel Barnett?
Dr. Ruth Darcel Barnett is a sleep medicine (internal medicine) physician in Lakeville, Massachusetts. The primary specialty in the NPI Registry is Sleep Medicine (Internal Medicine) Physician (taxonomy code 207RS0012X).
Where does Dr. Ruth Darcel Barnett practice?
Dr. Barnett practices at 54 Main St, Lakeville, MA 02347. Dr. Barnett's primary practice is Ruth Barnett,DO in Lakeville, Massachusetts. Dmand AI also links Dr. Barnett to 1 physician office.
What is Dr. Ruth Darcel Barnett's office phone number?
The practice phone on file for Dr. Barnett is (313) 270-4450.
What is Dr. Ruth Darcel Barnett's medical license number?
Dr. Barnett holds Michigan license 5101009310.
Does Dr. Ruth Darcel Barnett accept Medicare?
Yes. CMS data shows Dr. Barnett billed Medicare for 43 services in 2021, and Dr. Barnett accepts Medicare assignment.
What services does Dr. Ruth Darcel Barnett bill to Medicare?
In 2021, Dr. Barnett's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Ruth Darcel Barnett go to medical school?
Dr. Barnett graduated from Michigan State University College of Osteopathic Medicine in 1985.
What drugs does Dr. Ruth Darcel Barnett prescribe most?
In 2024 Medicare Part D data, Dr. Barnett's most prescribed drugs by claims were Amlodipine Besylate, Pantoprazole Sodium and Butalb-Acetaminoph-Caff-Codein.
Has Dr. Ruth Darcel Barnett received payments from drug or device companies?
CMS Open Payments shows $141 in general payments to Dr. Barnett from 2 companies from 2018 to 2024. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Ruth Darcel Barnett been practicing?
Dr. Barnett graduated from medical school in 1985, 41 years ago.
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