Nathan James Walker, PA
- Medicare services, 2024
- 772
- Medicare patients, 2024
- 289
- Part D claims, 2024
- 2,377
- Hospital affiliations
- 1
- Industry payments
- $351
- Practice address
- 117 W Bunny Ave, Santa Maria, CA 93458
- Practice phone
- Call (805) 739-3561
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hancock Health Center
Santa Maria, California
Find Nathan Walker's professional email, personal email and mobile number
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Nathan James Walker is a physician assistant in Santa Maria, California
Nathan Walker practices at Hancock Health Center in Santa Maria, California.
Nathan Walker's NPI, 1013790021, was assigned on August 14, 2023.
- NPI
- 1013790021NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345686069
- NPI enumeration date
- August 14, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (805) 739-3561
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathan James Walker practices at Hancock Health Center in Santa Maria, California
Nathan Walker's primary practice is Hancock Health Center, at 117 W Bunny Ave, Santa Maria, CA 93458 in Santa Barbara County. The practice phone is (805) 739-3561.
- Hancock Health Center117 W Bunny Ave, Santa Maria, CA 93458 · Santa Barbara CountyPhone(805) 739-3561
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Nathan James Walker is affiliated with 3 sites of care and 1 medical group
Nathan Walker's primary practice is Hancock Health Center in Santa Maria, California. Nathan Walker is also affiliated with Dignity Health - Marian Regional Medical Center. The medical group on file is Pacific Central Coast Health Centers Medical Group. Dmand AI also links Nathan Walker to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Nathan James Walker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathan Walker practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hancock Health Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Nathan James Walker is one of 11,482 physician assistants in California
Physician assistant is Nathan Walker's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Physician assistants near Nathan Walker
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
Nathan James Walker billed Medicare for 772 services in 2024
CMS data shows 772 Medicare services from Nathan Walker across 11 procedure codes in 2024, for 289 Medicare patients. Medicare paid $56,080 for them.
Nathan Walker's Medicare services by type, 2024
- Office and hospital visits716
- Tests and treatments56
Where Nathan Walker's Medicare services took place, 2024
- In an office69991%
- In a facility739%
Nathan Walker compared with the California median for physician assistants, 2024
- Nathan Walker
- California median
- Medicare services
- 772vs 2043.8 times
- Medicare patients
- 289vs 1052.8 times
- Part D claims
- 2,189vs 2439.0 times
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Nathan Walker's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Nathan James Walker treated 289 Medicare patients in 2024, average age 65
CMS counts 289 Medicare patients who saw Nathan Walker in 2024. The largest group is 65 to 74, with 111 patients. 75% of them have mood disorders, and 70% have high cholesterol. 63% are also on Medicaid. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Nathan Walker's median patient age at 60, with 64% women.
Nathan Walker's Medicare patients by age, 2024
Nathan Walker's Medicare patients by sex, 2024
- Women18464%
- Men10536%
Chronic conditions among Nathan Walker's Medicare patients, 2024
- Mood disorders75%
- High cholesterol70%
- Depression67%
- High blood pressure66%
- Anxiety65%
- Arthritis45%
- Bipolar disorder45%
- Diabetes33%
Share of Medicare patients with each condition. A patient can have several.
Nathan Walker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women64%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nathan James Walker wrote 2,377 Medicare Part D claims in 2024
In 2024, Nathan Walker wrote 2,377 Medicare Part D claims for 314 patients. 98% of them were for generic drugs. CMS names the drug for 2,189 of them, across 41 drugs with 11 or more claims each, at $36,178 in total drug cost.
Nathan Walker's Part D claims by kind of drug, 2024
- Generic2,333 claims98%
- Brand-name44 claims2%
Nathan Walker'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 Nathan Walker's Part D claims, 2024
- Antipsychotics, patients 65 and over8%198 of 2,377 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Nathan James Walker offers telehealth to Medicare patients
Nathan Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Nathan Walker as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Nathan James Walker received $351 in industry payments from 2024 to 2025
CMS Open Payments shows 14 general payments to Nathan Walker from 8 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Alkermes, Inc. paid the most, $83.
General payments to Nathan Walker by program year, 2024 to 2025
Companies that paid Nathan Walker the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Nathan James Walker'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 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) |
| 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 Nathan James Walker
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 James Walker's NPI number?
Nathan James Walker's NPI number is 1013790021. It was assigned on August 14, 2023, and it is active in the NPI Registry.
What does Nathan James Walker specialize in?
Nathan James Walker is a physician assistant in Santa Maria, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Nathan James Walker practice?
Nathan Walker practices at 117 W Bunny Ave, Santa Maria, CA 93458. Nathan Walker's primary practice is Hancock Health Center in Santa Maria, California. Dmand AI also links Nathan Walker to 1 group practice or clinic.
What is Nathan James Walker's office phone number?
The practice phone on file for Nathan Walker is (805) 739-3561.
Which hospitals is Nathan James Walker affiliated with?
Nathan Walker is affiliated with Dignity Health - Marian Regional Medical Center.
What medical group is Nathan James Walker part of?
Nathan Walker is linked to Pacific Central Coast Health Centers Medical Group.
Does Nathan James Walker accept Medicare?
Yes. CMS data shows Nathan Walker billed Medicare for 772 services in 2024, and Nathan Walker accepts Medicare assignment.
Does Nathan James Walker offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Nathan Walker as offering telehealth services.
How many Medicare patients does Nathan James Walker see?
CMS counts 289 Medicare patients who saw Nathan Walker in 2024, with an average age of 65.
What services does Nathan James Walker bill to Medicare?
In 2024, Nathan Walker's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and health assessment (96127).
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What drugs does Nathan James Walker prescribe most?
In 2024 Medicare Part D data, Nathan Walker's most prescribed drugs by claims were Lorazepam, Clonazepam and Quetiapine Fumarate.
Has Nathan James Walker received payments from drug or device companies?
CMS Open Payments shows $351 in general payments to Nathan Walker from 8 companies from 2024 to 2025. The largest total came from Alkermes, Inc.
How long has Nathan James Walker been practicing?
Nathan Walker graduated from medical school in 2023, 3 years ago.
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