Dr. Mark Grayson Hall, MD
- Part D claims, 2024
- 140
- Hospital affiliations
- 1
- Industry payments
- $220
- Medical group
- 1
- State license
- 1
- Practice address
- 2121 Santa Monica Blvd, Santa Monica, CA 90404
- Practice phone
- Call (310) 829-5511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hall'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 Grayson Hall is a general surgeon in Santa Monica, California
Dr. Hall practices at Providence Saint John's Health Center in Santa Monica, California, part of Providence Health & Services.
Dr. Hall's NPI, 1306475868, was assigned on April 6, 2020. Dr. Hall holds Kansas license 94-10298.
- NPI
- 1306475868NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567887870
- NPI enumeration date
- April 6, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 829-5511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Grayson Hall practices at Providence Saint John's Health Center in Santa Monica, California
Dr. Hall's primary practice is Providence Saint John's Health Center, at 2121 Santa Monica Blvd, Santa Monica, CA 90404 in Los Angeles County. The practice phone is (310) 829-5511.
- Providence Saint John's Health Center2121 Santa Monica Blvd, Santa Monica, CA 90404 · Los Angeles CountyPhone(310) 829-5511
Source: Dmand AI Affiliation Data
Dr. Mark Grayson Hall is affiliated with 1 site of care and 1 medical group
Dr. Hall's primary practice is Providence Saint John's Health Center in Santa Monica, California, part of Providence Health & Services. The medical group on file is Saint John's Physician Partners.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Grayson Hall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hall practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Saint John's Health Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Mark Grayson Hall is one of 2,926 general surgeons in California
Surgery is Dr. Hall's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Hall is licensed in Kansas.
Specialties and state licenses
- Surgery, KansasPrimary
General surgeons near Dr. Hall
Counts of general surgeons 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 Grayson Hall's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Hall's median patient age at 65, with 38% women.
Dr. Hall'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
- Women38%
- Men62%
Source: Dmand AI Patient Panel Data
Dr. Mark Grayson Hall wrote 140 Medicare Part D claims in 2024
In 2024, Dr. Hall wrote 140 Medicare Part D claims for 69 patients. 96% of them were for generic drugs. CMS names the drug for 73 of them, across 2 drugs with 11 or more claims each, at $288 in total drug cost. In 2023, CMS named 30 claims across 2 drugs.
Dr. Hall's Part D claims by kind of drug, 2024
- Generic134 claims96%
- Brand-name and other6 claims4%
Dr. Hall'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. Hall's Part D claims, 2024
- Opioids35%49 of 140 claims
- Antibiotics10%14 of 140 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 302024: 73143%
Drugs named by CMS: 2 in 2024, 2 in 2023.
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 Grayson Hall takes part in Medicare
Dr. Hall accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark Grayson Hall received $220 in industry payments from 2022 to 2025
CMS Open Payments shows 4 general payments to Dr. Hall from 3 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Intuitive Surgical, Inc. paid the most, $165.
General payments to Dr. Hall by program year, 2022 to 2025
Companies that paid Dr. Hall the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark Grayson Hall'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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)Doctors and Clinicians Utilization Data (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 Dr. Mark Grayson Hall
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 Grayson Hall's NPI number?
Dr. Mark Grayson Hall's NPI number is 1306475868. It was assigned on April 6, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Grayson Hall?
Dr. Mark Grayson Hall is a general surgeon in Santa Monica, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Mark Grayson Hall practice?
Dr. Hall practices at 2121 Santa Monica Blvd, Santa Monica, CA 90404. Dr. Hall's primary practice is Providence Saint John's Health Center in Santa Monica, California, part of Providence Health & Services.
What is Dr. Mark Grayson Hall's office phone number?
The practice phone on file for Dr. Hall is (310) 829-5511.
What is Dr. Mark Grayson Hall's medical license number?
Dr. Hall holds Kansas license 94-10298.
Which hospitals is Dr. Mark Grayson Hall affiliated with?
Dr. Hall practices at Providence Saint John's Health Center in Santa Monica, California.
What medical group is Dr. Mark Grayson Hall part of?
Dr. Hall is linked to Saint John's Physician Partners.
Does Dr. Mark Grayson Hall accept Medicare?
Yes. CMS lists Dr. Hall as accepting Medicare assignment.
What drugs does Dr. Mark Grayson Hall prescribe most?
In 2024 Medicare Part D data, Dr. Hall's most prescribed drugs by claims were Ondansetron ODT and Oxycodone HCl.
Has Dr. Mark Grayson Hall received payments from drug or device companies?
CMS Open Payments shows $220 in general payments to Dr. Hall from 3 companies from 2022 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Mark Grayson Hall been practicing?
Dr. Hall graduated from medical school in 2020, 6 years ago.
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