Dr. Marshall Lawrence Reiner III, MD
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 35
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 1493 Cambridge Street, Cambridge, MA 02139
- Practice phone
- Call (617) 665-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Marshall Lawrence Reiner III is a psychiatrist in Cambridge, Massachusetts
Dr. Reiner practices at CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance.
Dr. Reiner's NPI, 1760491773, was assigned on August 7, 2006. Dr. Reiner graduated from Boston University School of Medicine in 2002. Dr. Reiner holds Massachusetts license 228412.
- NPI
- 1760491773NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436256971
- NPI enumeration date
- August 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 665-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marshall Lawrence Reiner III practices at CHA Cambridge Hospital in Cambridge, Massachusetts
Dr. Reiner's primary practice is CHA Cambridge Hospital, at 1493 Cambridge Street, Cambridge, MA 02139 in Middlesex County. The practice phone is (617) 665-1000.
- CHA Cambridge Hospital1493 Cambridge Street, Cambridge, MA 02139 · Middlesex CountyPhone(617) 665-1000
Source: Dmand AI Affiliation Data
Dr. Marshall Lawrence Reiner III is affiliated with 1 site of care and 1 medical group
Dr. Reiner's primary practice is CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance. The medical group on file is Cambridge Health Alliance. Dr. Reiner's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marshall Lawrence Reiner III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Reiner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHA Cambridge Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marshall Lawrence Reiner III is one of 1,857 psychiatrists in Massachusetts
Psychiatry is Dr. Reiner's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Reiner is licensed in Massachusetts.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
Psychiatrists near Dr. Reiner
Counts of psychiatrists 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. Marshall Lawrence Reiner III billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Dr. Reiner across 1 procedure code in 2024, for 13 Medicare patients. Medicare paid $1,610 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Reiner's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 372024: 2435%
Dr. Reiner compared with the Massachusetts median for psychiatrists, 2024
- Dr. Reiner
- Massachusetts median
- Medicare services
- 24vs 17286% below
- Medicare patients
- 13vs 4269% below
- Part D claims
- 14vs 9285% below
Medians across 2,056 psychiatrists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Reiner'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. Marshall Lawrence Reiner III treated 13 Medicare patients in 2024, average age 45
CMS counts 13 Medicare patients who saw Dr. Reiner in 2024. The largest group is under 65, with 13 patients. 75% of them have mood disorders, and 75% have schizophrenia and other psychoses. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Reiner's median patient age at 36, with 30% women.
Dr. Reiner's Medicare patients by age, 2024
Chronic conditions among Dr. Reiner's Medicare patients, 2024
- Mood disorders75%
- Schizophrenia and other psychoses75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Reiner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women30%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marshall Lawrence Reiner III wrote 35 Medicare Part D claims in 2024
In 2024, Dr. Reiner wrote 35 Medicare Part D claims. 89% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $254 in total drug cost.
Dr. Reiner's Part D claims by kind of drug, 2024
- Generic31 claims89%
- Brand-name and other4 claims11%
Dr. Reiner's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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. Marshall Lawrence Reiner III scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Reiner for performance year 2024, reported as part of a group. Dr. Reiner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Reiner's MIPS scores, performance year 2024
- 91of 100Final score
- 77.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Marshall Lawrence Reiner III graduated from Boston University School of Medicine
Dr. Reiner graduated from Boston University School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marshall Lawrence Reiner III'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)Clinician Public Reporting: Overall MIPS Performance (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. Marshall Lawrence Reiner III
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. Marshall Lawrence Reiner III's NPI number?
Dr. Marshall Lawrence Reiner III's NPI number is 1760491773. It was assigned on August 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marshall Lawrence Reiner III?
Dr. Marshall Lawrence Reiner III is a psychiatrist in Cambridge, Massachusetts. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Marshall Lawrence Reiner III practice?
Dr. Reiner practices at 1493 Cambridge Street, Cambridge, MA 02139. Dr. Reiner's primary practice is CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance.
What is Dr. Marshall Lawrence Reiner III's office phone number?
The practice phone on file for Dr. Reiner is (617) 665-1000.
What is Dr. Marshall Lawrence Reiner III's medical license number?
Dr. Reiner holds Massachusetts license 228412.
Which hospitals is Dr. Marshall Lawrence Reiner III affiliated with?
Dr. Reiner practices at CHA Cambridge Hospital in Cambridge, Massachusetts.
What medical group is Dr. Marshall Lawrence Reiner III part of?
Dr. Reiner is linked to Cambridge Health Alliance.
Does Dr. Marshall Lawrence Reiner III accept Medicare?
Yes. CMS data shows Dr. Reiner billed Medicare for 24 services in 2024, and Dr. Reiner accepts Medicare assignment.
What is Dr. Marshall Lawrence Reiner III's MIPS score?
Dr. Reiner's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Marshall Lawrence Reiner III see?
CMS counts 13 Medicare patients who saw Dr. Reiner in 2024, with an average age of 45.
Show 4 more questionsShow fewer questions
What services does Dr. Marshall Lawrence Reiner III bill to Medicare?
In 2024, Dr. Reiner's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Marshall Lawrence Reiner III go to medical school?
Dr. Reiner graduated from Boston University School of Medicine in 2002.
What drugs does Dr. Marshall Lawrence Reiner III prescribe most?
In 2016 Medicare Part D data, Dr. Reiner's most prescribed drugs by claims were Quetiapine Fumarate.
How long has Dr. Marshall Lawrence Reiner III been practicing?
Dr. Reiner graduated from medical school in 2002, 24 years ago.
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