Amy L. Marks, CRNA
- Medicare patients, 2024
- 345
- Hospital affiliations
- 2
- Industry payments
- $20
- Medical groups
- 3
- State license
- 1
- Practice address
- 23560 Madison St, Suite 109, Torrance, CA 90505
- Practice phone
- Call (213) 325-6331
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Endoscopy Center of the South Bay
Surgery Center - Medicare-Certified · Torrance, California
Find Amy Marks' 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.
Amy L. Marks is a nurse anesthetist in Torrance, California
Amy Marks practices at Endoscopy Center of the South Bay in Torrance, California.
Amy Marks' NPI, 1720289614, was assigned on May 30, 2007. Amy Marks holds California license NA3091.
- NPI
- 1720289614NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274552617
- NPI enumeration date
- May 30, 2007
- NPI status
- Active
- Practice phone
- (213) 325-6331
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Amy L. Marks practices at Endoscopy Center of the South Bay in Torrance, California
Amy Marks' primary practice is Endoscopy Center of the South Bay, at 23560 Madison St, Suite 109, Torrance, CA 90505. The practice phone is (213) 325-6331.
- Endoscopy Center of the South Bay23560 Madison St, Suite 109, Torrance, CA 90505Phone(213) 325-6331
Source: Dmand AI Affiliation Data
Amy L. Marks is affiliated with 3 sites of care and 3 medical groups
Amy Marks' primary practice is Endoscopy Center of the South Bay in Torrance, California. Amy Marks is also affiliated with Fontana Medical Center. The medical group on file is South Bay Anesthesia Medical Group. Dmand AI also links Amy Marks to 1 more hospital and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Amy L. Marks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Amy Marks practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Endoscopy Center of the South Bay | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Amy L. Marks is one of 2,410 nurse anesthetists in California
Nurse anesthetist, certified registered is Amy Marks' primary specialty in the NPI Registry, under taxonomy code 367500000X. Amy Marks is licensed in California.
Specialties and state licenses
- Certified registered nurse anesthetist, CaliforniaPrimary
Nurse anesthetists near Amy Marks
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
Amy L. Marks treated 345 Medicare patients in 2024, average age 73
CMS counts 345 Medicare patients who saw Amy Marks in 2024. The largest group is 65 to 74, with 188 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 31% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Amy Marks' median patient age at 61, with 54% women.
Amy Marks' Medicare patients by age, 2024
Amy Marks' Medicare patients by sex, 2024
- Women18152%
- Men16448%
Chronic conditions among Amy Marks' Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis37%
- Diabetes32%
- Ischemic heart disease22%
- Anxiety21%
- Chronic kidney disease21%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
Amy Marks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Amy L. Marks received $20 in industry payments in 2025
CMS Open Payments shows 1 general payment to Amy Marks from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $20.
Companies that paid Amy Marks 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 Amy L. Marks'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 DataMedicare Physician & Other Practitioners - by Provider (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 Amy L. Marks
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Amy L. Marks' NPI number?
Amy L. Marks' NPI number is 1720289614. It was assigned on May 30, 2007, and it is active in the NPI Registry.
What does Amy L. Marks specialize in?
Amy L. Marks is a nurse anesthetist in Torrance, California. The primary specialty in the NPI Registry is Certified Registered Nurse Anesthetist (taxonomy code 367500000X).
Where does Amy L. Marks practice?
Amy Marks practices at 23560 Madison St, Suite 109, Torrance, CA 90505. Amy Marks' primary practice is Endoscopy Center of the South Bay in Torrance, California. Dmand AI also links Amy Marks to 1 hospital and 2 medical groups.
What is Amy L. Marks' office phone number?
The practice phone on file for Amy Marks is (213) 325-6331.
What is Amy L. Marks' medical license number?
Amy Marks holds California license NA3091.
Which hospitals is Amy L. Marks affiliated with?
Amy Marks is affiliated with Fontana Medical Center. Dmand AI links Amy Marks to 1 more hospital.
What medical group is Amy L. Marks part of?
Amy Marks is linked to South Bay Anesthesia Medical Group. Dmand AI links Amy Marks to 2 more medical groups.
How many Medicare patients does Amy L. Marks see?
CMS counts 345 Medicare patients who saw Amy Marks in 2024, with an average age of 73.
Has Amy L. Marks received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Amy Marks from 1 company from 2025 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Amy L. Marks been practicing?
Amy Marks graduated from medical school in 2003, 23 years ago.
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