Ernest Stock III, PA
- Medicare patients, 2024
- 607
- Part D claims, 2024
- 1,507
- Industry payments
- $25
- Affiliated sites
- 3
- Medical groups
- 4
- Practice address
- 2361 Rosecrans Ave, El Segundo, CA 90245
- Practice phone
- Call (818) 880-2225
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Exer Urgent Care - El Segundo
Urgent Care Center · El Segundo, California
Find Ernest Stock'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.
Ernest Stock III is a physician assistant in El Segundo, California
Ernest Stock practices at Exer Urgent Care - El Segundo in El Segundo, California.
Ernest Stock's NPI, 1548735350, was assigned on October 8, 2018. Ernest Stock holds California license 56082.
- NPI
- 1548735350NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517206832
- NPI enumeration date
- October 8, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (818) 880-2225
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Ernest Stock III practices at Exer Urgent Care - El Segundo in El Segundo, California
Ernest Stock's primary practice is Exer Urgent Care - El Segundo, at 2361 Rosecrans Ave, El Segundo, CA 90245. The practice phone is (818) 880-2225.
- Exer Urgent Care - El Segundo2361 Rosecrans Ave, El Segundo, CA 90245Phone(818) 880-2225
Source: Dmand AI Affiliation Data
Ernest Stock III is affiliated with 3 sites of care and 4 medical groups
Ernest Stock's primary practice is Exer Urgent Care - El Segundo in El Segundo, California. The medical group on file is Exer Urgent Care. Dmand AI also links Ernest Stock to 3 more medical groups and 2 group practices and clinics, each named with a free account. Ernest Stock's employer is on file too: an urgent care center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Ernest Stock III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ernest Stock practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Exer Urgent Care - El Segundo | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Ernest Stock III is one of 11,482 physician assistants in California
Physician assistant is Ernest Stock's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Ernest Stock is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Ernest Stock
Counts of physician assistants 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
Ernest Stock III treated 607 Medicare patients in 2024, average age 74
CMS counts 607 Medicare patients who saw Ernest Stock in 2024. The largest group is 65 to 74, with 296 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ernest Stock's median patient age at 55, with 63% women.
Ernest Stock's Medicare patients by age, 2024
Ernest Stock's Medicare patients by sex, 2024
- Women37762%
- Men23038%
Chronic conditions among Ernest Stock's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis46%
- Ischemic heart disease29%
- Diabetes24%
- Mood disorders23%
- Anxiety21%
- Chronic kidney disease21%
Share of Medicare patients with each condition. A patient can have several.
Ernest Stock's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ernest Stock III wrote 1,507 Medicare Part D claims in 2024
In 2024, Ernest Stock wrote 1,507 Medicare Part D claims for 1,065 patients. 90% of them were for generic drugs.
Ernest Stock's Part D claims by kind of drug, 2024
- Generic1,357 claims90%
- Brand-name132 claims9%
- Other18 claims1%
Drug classes CMS tracks in Ernest Stock's Part D claims, 2024
- Opioids1%14 of 1,507 claims
- Antibiotics50%752 of 1,507 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Ernest Stock III offers telehealth to Medicare patients
Ernest Stock accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Ernest Stock as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Ernest Stock III received $25 in industry payments in 2025
CMS Open Payments shows 1 general payment to Ernest Stock from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $25.
Companies that paid Ernest Stock 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 Ernest Stock III'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) |
| Part D prescribing | 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) |
| 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 Ernest Stock III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ernest Stock III's NPI number?
Ernest Stock III's NPI number is 1548735350. It was assigned on October 8, 2018, and it is active in the NPI Registry.
What does Ernest Stock III specialize in?
Ernest Stock III is a physician assistant in El Segundo, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Ernest Stock III practice?
Ernest Stock practices at 2361 Rosecrans Ave, El Segundo, CA 90245. Ernest Stock's primary practice is Exer Urgent Care - El Segundo in El Segundo, California. Dmand AI also links Ernest Stock to 3 medical groups and 2 group practices and clinics.
What is Ernest Stock III's office phone number?
The practice phone on file for Ernest Stock is (818) 880-2225.
What is Ernest Stock III's medical license number?
Ernest Stock holds California license 56082.
What medical group is Ernest Stock III part of?
Ernest Stock is linked to Exer Urgent Care. Dmand AI links Ernest Stock to 3 more medical groups.
Does Ernest Stock III accept Medicare?
Yes. CMS lists Ernest Stock as accepting Medicare assignment.
Does Ernest Stock III offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Ernest Stock as offering telehealth services.
How many Medicare patients does Ernest Stock III see?
CMS counts 607 Medicare patients who saw Ernest Stock in 2024, with an average age of 74.
Has Ernest Stock III received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to Ernest Stock from 1 company from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Ernest Stock III been practicing?
Ernest Stock graduated from medical school in 2018, 8 years ago.
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