Kai Cosmo Zajac, PA

  • Lompoc, CA
  • Physician assistant
NPI1114575081
Medicare services, 2024
298
Medicare patients, 2024
266
Part D claims, 2024
178
Hospital affiliations
1
Medical groups
2
Practice address
1515 E Ocean Avenue, Lompoc, CA 93436
Practice phone
Call (805) 737-3300
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Lompoc Valley Medical Center

Hospital · Lompoc, California

See all 3 affiliations

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Kai Cosmo Zajac is a physician assistant in Lompoc, California

Kai Zajac practices at Lompoc Valley Medical Center in Lompoc, California, part of Lompoc Valley Medical Center.

Kai Zajac's NPI, 1114575081, was assigned on September 3, 2019.

NPI and contact details
NPI enumeration date
September 3, 2019
NPI status
Active
Practice phone
(805) 737-3300
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
33
Medical school graduation
2019

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data

Kai Cosmo Zajac practices at 2 locations in Lompoc, California

Kai Zajac's primary practice is Lompoc Valley Medical Center, at 1515 E Ocean Avenue, Lompoc, CA 93436 in Santa Barbara County. The practice phone is (805) 737-3300. Kai Zajac also practices at Lompoc Valley Medical Center, 1509 Ocean Way, Lompoc, CA 93436.

  • Lompoc Valley Medical CenterPrimary
    1515 E Ocean Avenue, Lompoc, CA 93436 · Santa Barbara CountyPhone(805) 737-3300
  • Lompoc Valley Medical Center
    1509 Ocean Way, Lompoc, CA 93436 · Santa Barbara CountyPhone(805) 737-3300

Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data

Kai Cosmo Zajac is affiliated with 1 site of care and 2 medical groups

Kai Zajac's primary practice is Lompoc Valley Medical Center in Lompoc, California, part of Lompoc Valley Medical Center. The medical group on file is Lompoc Valley Medical Center. Dmand AI also links Kai Zajac to 1 more medical group, named with a free account.

See all 3 affiliations for Kai Zajac

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Kai Cosmo Zajac's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Kai Zajac practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Lompoc Valley Medical CenterAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Kai Cosmo Zajac is one of 11,482 physician assistants in California

Physician assistant is Kai Zajac's primary specialty in the NPI Registry, under taxonomy code 363A00000X.

Specialties and state licenses

  • Physician assistantPrimarytaxonomy 363A00000X

Clinical focus

Dmand AI lists muscle pain, fibromyalgia, and limb pain among the conditions Kai Zajac treats.

Physician assistants near Kai Zajac

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

Kai Cosmo Zajac billed Medicare for 298 services in 2024

CMS data shows 298 Medicare services from Kai Zajac across 4 procedure codes in 2024, for 266 Medicare patients. Medicare paid $22,191 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024298
Medicare patients266
Paid by Medicare$22,191
Procedure codes4

Kai Zajac's Medicare services by type, 2024

  1. Office and hospital visits265
  2. Tests and treatments33

Kai Zajac compared with the California median for physician assistants, 2024

  • Kai Zajac
  • California median
Medicare services
298vs 20446% above
Medicare patients
266vs 1052.5 times
Part D claims
49vs 24380% below

Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.

Kai Zajac'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

Kai Cosmo Zajac treated 266 Medicare patients in 2024, average age 71

CMS counts 266 Medicare patients who saw Kai Zajac in 2024. The largest group is 65 to 74, with 100 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 56% are also on Medicaid. Their average risk score is 1.41, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Kai Zajac's median patient age at 32, with 52% women.

Medicare patients, 2024266
Average age71
Average risk score1.41
Also on Medicaid56%

Kai Zajac's Medicare patients by age, 2024

Kai Zajac's Medicare patients by sex, 2024

  • Women15157%
  • Men11543%

Chronic conditions among Kai Zajac's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol68%
  3. Arthritis55%
  4. Mood disorders41%
  5. Anxiety38%
  6. Diabetes36%
  7. Depression33%
  8. Chronic kidney disease28%

Share of Medicare patients with each condition. A patient can have several.

Kai Zajac's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 32

Patient panel by sex, all payers

  • Women52%
  • Men47%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Kai Cosmo Zajac wrote 178 Medicare Part D claims in 2024

In 2024, Kai Zajac wrote 178 Medicare Part D claims for 115 patients. 89% of them were for generic drugs. CMS names the drug for 49 of them, across 3 drugs with 11 or more claims each, at $303 in total drug cost.

Part D claims, 2024178
Drugs named by CMS3
Total drug cost$303
Part D patients115

Kai Zajac's Part D claims by kind of drug, 2024

  • Generic159 claims89%
  • Brand-name19 claims11%

Kai Zajac'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 Kai Zajac's Part D claims, 2024

  • Opioids8%14 of 178 claims
  • Antibiotics38%68 of 178 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by Kai Zajac

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

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Sources for Kai Cosmo Zajac's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Kai Cosmo Zajac

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Kai Cosmo Zajac's NPI number?

Kai Cosmo Zajac's NPI number is 1114575081. It was assigned on September 3, 2019, and it is active in the NPI Registry.

What does Kai Cosmo Zajac specialize in?

Kai Cosmo Zajac is a physician assistant in Lompoc, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Kai Cosmo Zajac practice?

Kai Zajac practices at 1515 E Ocean Avenue, Lompoc, CA 93436. Kai Zajac also practices at 1509 Ocean Way, Lompoc, CA 93436. Kai Zajac's primary practice is Lompoc Valley Medical Center in Lompoc, California, part of Lompoc Valley Medical Center. Dmand AI also links Kai Zajac to 1 medical group.

What is Kai Cosmo Zajac's office phone number?

The practice phone on file for Kai Zajac is (805) 737-3300.

Which hospitals is Kai Cosmo Zajac affiliated with?

Kai Zajac practices at Lompoc Valley Medical Center in Lompoc, California.

What medical group is Kai Cosmo Zajac part of?

Kai Zajac is linked to Lompoc Valley Medical Center. Dmand AI links Kai Zajac to 1 more medical group.

Does Kai Cosmo Zajac accept Medicare?

Yes. CMS data shows Kai Zajac billed Medicare for 298 services in 2024.

How many Medicare patients does Kai Cosmo Zajac see?

CMS counts 266 Medicare patients who saw Kai Zajac in 2024, with an average age of 71.

What services does Kai Cosmo Zajac bill to Medicare?

In 2024, Kai Zajac's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and heart test or procedure (93010).

What drugs does Kai Cosmo Zajac prescribe most?

In 2024 Medicare Part D data, Kai Zajac's most prescribed drugs by claims were Cephalexin, Amoxicillin-Clavulanate Potass and Sulfamethoxazole-Trimethoprim.

How long has Kai Cosmo Zajac been practicing?

Kai Zajac graduated from medical school in 2019, 7 years ago.

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