Dr. Rex Neal Smith, MD, PhD
- Medicare services, 2024
- 1,399
- Medicare patients, 2024
- 355
- Hospital affiliations
- 3
- Medical groups
- 4
- State license
- 1
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Smith's professional email, personal email and mobile number
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Dr. Rex Neal Smith is an immunopathology physician in Boston, Massachusetts
Dr. Smith practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Smith's NPI, 1801870910, was assigned on December 1, 2005. Dr. Smith graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1992. Dr. Smith holds Massachusetts license 150072.
- NPI
- 1801870910NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810180056
- NPI enumeration date
- December 1, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rex Neal Smith practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Smith's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Rex Neal Smith is affiliated with 4 sites of care and 4 medical groups
Dr. Smith's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Smith is also affiliated with Brigham and Women's Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Smith to 1 more hospital, 3 medical groups and 1 community health center, 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. Rex Neal Smith's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Smith practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rex Neal Smith's specialty is immunopathology
Immunopathology is Dr. Smith's primary specialty in the NPI Registry, under taxonomy code 207ZI0100X. Dr. Smith is licensed in Massachusetts.
Specialties and state licenses
- Immunopathology, MassachusettsPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Rex Neal Smith billed Medicare for 1,399 services in 2024
CMS data shows 1,399 Medicare services from Dr. Smith across 13 procedure codes in 2024, for 355 Medicare patients. Medicare paid $35,218 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Smith'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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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Rex Neal Smith treated 355 Medicare patients in 2024, average age 71
CMS counts 355 Medicare patients who saw Dr. Smith in 2024. The largest group is 65 to 74, with 162 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.59, 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. Smith's median patient age at 63, with 38% women.
Dr. Smith's Medicare patients by age, 2024
Dr. Smith's Medicare patients by sex, 2024
- Women14140%
- Men21460%
Chronic conditions among Dr. Smith's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease63%
- Ischemic heart disease60%
- Heart failure56%
- Atrial fibrillation47%
- Arthritis45%
- Diabetes43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Smith'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
- Women38%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Rex Neal Smith takes part in Medicare
Dr. Smith 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. Rex Neal Smith graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Dr. Smith graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rex Neal Smith'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) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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 |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Rex Neal Smith
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. Rex Neal Smith's NPI number?
Dr. Rex Neal Smith's NPI number is 1801870910. It was assigned on December 1, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Rex Neal Smith?
Dr. Rex Neal Smith is an immunopathology physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Immunopathology Physician (taxonomy code 207ZI0100X).
Where does Dr. Rex Neal Smith practice?
Dr. Smith practices at 55 Fruit Street, Boston, MA 02114. Dr. Smith's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Smith to 1 hospital, 3 medical groups and 1 community health center.
What is Dr. Rex Neal Smith's office phone number?
The practice phone on file for Dr. Smith is (617) 726-2000.
What is Dr. Rex Neal Smith's medical license number?
Dr. Smith holds Massachusetts license 150072.
Which hospitals is Dr. Rex Neal Smith affiliated with?
Dr. Smith practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Smith is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Smith to 1 more hospital.
What medical group is Dr. Rex Neal Smith part of?
Dr. Smith is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Smith to 3 more medical groups.
Does Dr. Rex Neal Smith accept Medicare?
Yes. CMS data shows Dr. Smith billed Medicare for 1,399 services in 2024, and Dr. Smith accepts Medicare assignment.
How many Medicare patients does Dr. Rex Neal Smith see?
CMS counts 355 Medicare patients who saw Dr. Smith in 2024, with an average age of 71.
What services does Dr. Rex Neal Smith bill to Medicare?
In 2024, Dr. Smith's most billed Medicare services were lab and pathology test (88350), lab and pathology test (88305) and lab and pathology test (88313).
Where did Dr. Rex Neal Smith go to medical school?
Dr. Smith graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1992.
How long has Dr. Rex Neal Smith been practicing?
Dr. Smith graduated from medical school in 1992, 34 years ago.
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