Brian T. Sim, CRNA
- Medicare patients, 2024
- 118
- Hospital affiliations
- 2
- Industry payments
- $49
- Medical groups
- 5
- Year NPI issued
- 2006
- Practice address
- 130 2nd Ave, Waltham, MA 02451
- Practice phone
- Call (781) 434-6400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Surgery Center of Waltham
Waltham, Massachusetts
Find Brian Sim'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.
Brian T. Sim is a nurse anesthetist in Waltham, Massachusetts
Brian Sim practices at The Surgery Center of Waltham in Waltham, Massachusetts.
Brian Sim's NPI, 1598730491, was assigned on February 22, 2006.
- NPI
- 1598730491NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496789687
- NPI enumeration date
- February 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (781) 434-6400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Brian T. Sim practices at The Surgery Center of Waltham in Waltham, Massachusetts
Brian Sim's primary practice is The Surgery Center of Waltham, at 130 2nd Ave, Waltham, MA 02451 in Middlesex County. The practice phone is (781) 434-6400.
- The Surgery Center of Waltham130 2nd Ave, Waltham, MA 02451 · Middlesex CountyPhone(781) 434-6400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Brian T. Sim is affiliated with 3 sites of care and 5 medical groups
Brian Sim's primary practice is The Surgery Center of Waltham in Waltham, Massachusetts. Brian Sim is also affiliated with Boston Medical Center. The medical group on file is Steward Medical Group. Dmand AI also links Brian Sim to 1 more hospital and 4 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Brian T. Sim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Brian Sim practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Surgery Center of Waltham | Available with a free account |
| +2 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Brian T. Sim is one of 1,027 nurse anesthetists in Massachusetts
Nurse anesthetist, certified registered is Brian Sim's primary specialty in the NPI Registry, under taxonomy code 367500000X.
Specialties and state licenses
- Certified registered nurse anesthetistPrimary
Nurse anesthetists near Brian Sim
Counts of nurse anesthetists 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
Brian T. Sim treated 118 Medicare patients in 2024, average age 74
CMS counts 118 Medicare patients who saw Brian Sim in 2024. The largest group is 75 to 84, with 54 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Brian Sim's median patient age at 65, with 49% women.
Brian Sim's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Brian Sim's Medicare patients by sex, 2024
- Women7765%
- Men4135%
Chronic conditions among Brian Sim's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Anxiety39%
- Diabetes32%
- Depression30%
- Mood disorders30%
- Asthma25%
Share of Medicare patients with each condition. A patient can have several.
Brian Sim's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Brian T. Sim takes part in Medicare
Brian Sim 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)
Brian T. Sim received $49 in industry payments in 2025
CMS Open Payments shows 2 general payments to Brian Sim from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Madrigal Pharmaceuticals paid the most, $32.
Companies that paid Brian Sim the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Brian T. Sim'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 DataDmand AI Org Hierarchy Data |
| 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) |
| Industry payments | Open Payments (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 Brian T. Sim
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Brian T. Sim's NPI number?
Brian T. Sim's NPI number is 1598730491. It was assigned on February 22, 2006, and it is active in the NPI Registry.
What does Brian T. Sim specialize in?
Brian T. Sim is a nurse anesthetist in Waltham, Massachusetts. The primary specialty in the NPI Registry is Certified Registered Nurse Anesthetist (taxonomy code 367500000X).
Where does Brian T. Sim practice?
Brian Sim practices at 130 2nd Ave, Waltham, MA 02451. Brian Sim's primary practice is The Surgery Center of Waltham in Waltham, Massachusetts. Dmand AI also links Brian Sim to 1 hospital and 4 medical groups.
What is Brian T. Sim's office phone number?
The practice phone on file for Brian Sim is (781) 434-6400.
Which hospitals is Brian T. Sim affiliated with?
Brian Sim is affiliated with Boston Medical Center. Dmand AI links Brian Sim to 1 more hospital.
What medical group is Brian T. Sim part of?
Brian Sim is linked to Steward Medical Group. Dmand AI links Brian Sim to 4 more medical groups.
Does Brian T. Sim accept Medicare?
Yes. CMS lists Brian Sim as accepting Medicare assignment.
How many Medicare patients does Brian T. Sim see?
CMS counts 118 Medicare patients who saw Brian Sim in 2024, with an average age of 74.
Has Brian T. Sim received payments from drug or device companies?
CMS Open Payments shows $49 in general payments to Brian Sim from 2 companies from 2025 to 2025. The largest total came from Madrigal Pharmaceuticals.
How long has Brian T. Sim been practicing?
Brian Sim graduated from medical school in 2005, 21 years ago.
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