Dr. Mark Layer, MD
- Medicare services, 2024
- 319
- Medicare patients, 2024
- 252
- Part D claims, 2024
- 132
- Hospital affiliations
- 1
- Medical groups
- 3
- Practice address
- 100 South Street, Southbridge, MA 01550
- Practice phone
- Call (508) 765-9771
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Layer'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.
Dr. Mark Layer is an emergency medicine physician in Southbridge, Massachusetts
Dr. Layer practices at UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts, part of UMass Memorial Health Care.
Dr. Layer's NPI, 1033539655, was assigned on April 22, 2014. Dr. Layer holds Massachusetts license 270407.
- NPI
- 1033539655NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496024184
- NPI enumeration date
- April 22, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 765-9771
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Layer practices at UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts
Dr. Layer's primary practice is UMass Memorial Health - Harrington Hospital, at 100 South Street, Southbridge, MA 01550 in Worcester County. The practice phone is (508) 765-9771.
- UMass Memorial Health - Harrington Hospital100 South Street, Southbridge, MA 01550 · Worcester CountyPhone(508) 765-9771
Source: Dmand AI Affiliation Data
Dr. Mark Layer is affiliated with 4 sites of care and 3 medical groups
Dr. Layer's primary practice is UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts, part of UMass Memorial Health Care. The medical group on file is Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI also links Dr. Layer to 3 more group practices and clinics and 2 medical groups, 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. Mark Layer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Layer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UMass Memorial Health - Harrington Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Layer is one of 1,483 emergency medicine physicians in Massachusetts
Emergency medicine is Dr. Layer's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Layer is licensed in Massachusetts.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
Emergency medicine physicians near Dr. Layer
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. Mark Layer billed Medicare for 319 services in 2024
CMS data shows 319 Medicare services from Dr. Layer across 5 procedure codes in 2024, for 252 Medicare patients. Medicare paid $32,358 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Layer's Medicare services by type, 2018 to 2024
- 2018
- 2024
- Office and hospital visits
- 2018: 1572024: 27173%
- Tests and treatments
- 2018: 1182024: 4859%
Dr. Layer compared with the Massachusetts median for emergency medicine physicians, 2024
- Dr. Layer
- Massachusetts median
- Medicare services
- 319vs 3416% below
- Medicare patients
- 252vs 33725% below
- Part D claims
- 56vs 3656% above
Medians across 1,477 emergency medicine physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Layer'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 Dr. Layer and other emergency medicine physicians in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Layer treated 252 Medicare patients in 2024, average age 71
CMS counts 252 Medicare patients who saw Dr. Layer in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 1.96, 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. Layer's median patient age at 49, with 54% women.
Dr. Layer's Medicare patients by age, 2024
Dr. Layer's Medicare patients by sex, 2024
- Women13052%
- Men12248%
Chronic conditions among Dr. Layer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety51%
- Mood disorders49%
- Arthritis47%
- Depression43%
- Chronic kidney disease41%
- Ischemic heart disease38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Layer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Layer wrote 132 Medicare Part D claims in 2024
In 2024, Dr. Layer wrote 132 Medicare Part D claims for 92 patients. 95% of them were for generic drugs. CMS names the drug for 56 of them, across 4 drugs with 11 or more claims each, at $861 in total drug cost.
Dr. Layer's Part D claims by kind of drug, 2024
- Generic125 claims95%
- Brand-name and other7 claims5%
Dr. Layer'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. Layer's Part D claims, 2024
- Antibiotics51%67 of 132 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
How Dr. Mark Layer takes part in Medicare
Dr. Layer 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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Sources for Dr. Mark Layer'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) |
| 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. Mark Layer
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. Mark Layer's NPI number?
Dr. Mark Layer's NPI number is 1033539655. It was assigned on April 22, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Layer?
Dr. Mark Layer is an emergency medicine physician in Southbridge, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Layer practice?
Dr. Layer practices at 100 South Street, Southbridge, MA 01550. Dr. Layer's primary practice is UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts, part of UMass Memorial Health Care. Dmand AI also links Dr. Layer to 3 group practices and clinics and 2 medical groups.
What is Dr. Mark Layer's office phone number?
The practice phone on file for Dr. Layer is (508) 765-9771.
What is Dr. Mark Layer's medical license number?
Dr. Layer holds Massachusetts license 270407.
Which hospitals is Dr. Mark Layer affiliated with?
Dr. Layer practices at UMass Memorial Health - Harrington Hospital in Southbridge, Massachusetts.
What medical group is Dr. Mark Layer part of?
Dr. Layer is linked to Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI links Dr. Layer to 2 more medical groups.
Does Dr. Mark Layer accept Medicare?
Yes. CMS data shows Dr. Layer billed Medicare for 319 services in 2024, and Dr. Layer accepts Medicare assignment.
How many Medicare patients does Dr. Mark Layer see?
CMS counts 252 Medicare patients who saw Dr. Layer in 2024, with an average age of 71.
What services does Dr. Mark Layer bill to Medicare?
In 2024, Dr. Layer's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93010).
What drugs does Dr. Mark Layer prescribe most?
In 2024 Medicare Part D data, Dr. Layer's most prescribed drugs by claims were Cefpodoxime Proxetil, Azithromycin and Ondansetron ODT.
How long has Dr. Mark Layer been practicing?
Dr. Layer graduated from medical school in 2014, 12 years ago.
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