Nathan Sim Marriott, DPT
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2025
- Practice address
- 11856 N Balboa Blvd, Granada Hills, CA 91344
- Practice phone
- Call (818) 217-4868
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
North Valley Physical Therapy Inc
Granada Hills, California
Find Nathan Marriott'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.
Nathan Sim Marriott is a physical therapist in Granada Hills, California
Nathan Marriott practices at North Valley Physical Therapy Inc in Granada Hills, California.
Nathan Marriott's NPI, 1083584213, was assigned on November 11, 2025. Nathan Marriott holds California license 309138.
- NPI
- 1083584213NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496249054
- NPI enumeration date
- November 11, 2025
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 217-4868
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 27
- Medical school graduation
- 2025
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathan Sim Marriott practices at North Valley Physical Therapy Inc in Granada Hills, California
Nathan Marriott's primary practice is North Valley Physical Therapy Inc, at 11856 N Balboa Blvd, Granada Hills, CA 91344 in Los Angeles County. The practice phone is (818) 217-4868.
- North Valley Physical Therapy Inc11856 N Balboa Blvd, Granada Hills, CA 91344 · Los Angeles CountyPhone(818) 217-4868
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Nathan Sim Marriott is affiliated with 1 site of care and 1 medical group
Nathan Marriott's primary practice is North Valley Physical Therapy Inc in Granada Hills, California. The medical group on file is North Valley Physical Therapy.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Nathan Sim Marriott's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathan Marriott practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| North Valley Physical Therapy Inc | Available with a free account |
Source: Dmand AI Technology Install Data
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Nathan Sim Marriott is one of 11,178 physical therapists in California
Physical therapist is Nathan Marriott's primary specialty in the NPI Registry, under taxonomy code 225100000X. Nathan Marriott is licensed in California.
Specialties and state licenses
- Physical therapist, CaliforniaPrimary
Physical therapists near Nathan Marriott
Counts of physical therapists 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
Nathan Sim Marriott's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Nathan Marriott's median patient age at 73, with 57% women.
Nathan Marriott's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women57%
- Men42%
Source: Dmand AI Patient Panel Data
How Nathan Sim Marriott takes part in Medicare
Nathan Marriott 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)
Sources for Nathan Sim Marriott'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 Nathan Sim Marriott
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Nathan Sim Marriott's NPI number?
Nathan Sim Marriott's NPI number is 1083584213. It was assigned on November 11, 2025, and it is active in the NPI Registry.
What does Nathan Sim Marriott specialize in?
Nathan Sim Marriott is a physical therapist in Granada Hills, California. The primary specialty in the NPI Registry is Physical Therapist (taxonomy code 225100000X).
Where does Nathan Sim Marriott practice?
Nathan Marriott practices at 11856 N Balboa Blvd, Granada Hills, CA 91344. Nathan Marriott's primary practice is North Valley Physical Therapy Inc in Granada Hills, California.
What is Nathan Sim Marriott's office phone number?
The practice phone on file for Nathan Marriott is (818) 217-4868.
What is Nathan Sim Marriott's medical license number?
Nathan Marriott holds California license 309138.
What medical group is Nathan Sim Marriott part of?
Nathan Marriott is linked to North Valley Physical Therapy.
Does Nathan Sim Marriott accept Medicare?
Yes. CMS lists Nathan Marriott as accepting Medicare assignment.
How long has Nathan Sim Marriott been practicing?
Nathan Marriott graduated from medical school in 2025, 1 years ago.
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