Lydia Somi Park

  • Thousand Oaks, CA
  • Internist
NPI1235620287
Medicare services, 2024
755
Medicare patients, 2024
338
Part D claims, 2024
2,757
Publications
1
Industry payments
$182
Practice address
3680 N Moorpark Rd, Thousand Oaks, CA 91360
Practice phone
Call (949) 951-2770
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Rehabcare

Thousand Oaks, California

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Lydia Somi Park is an internist in Thousand Oaks, California

Lydia Park practices at Rehabcare in Thousand Oaks, California.

Lydia Park's NPI, 1235620287, was assigned on May 25, 2018. Lydia Park graduated from Jacobs School of Medicine and Biomedical Sciences in 2018. Lydia Park's California license number on file is A166501.

NPI and contact details
NPI enumeration date
May 25, 2018
NPI status
Active
Practice phone
(949) 951-2770
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
34
Medical school graduation
2018

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

Lydia Somi Park practices at Rehabcare in Thousand Oaks, California

Lydia Park's primary practice is Rehabcare, at 3680 N Moorpark Rd, Thousand Oaks, CA 91360 in Ventura County. The practice phone is (949) 951-2770.

  • Rehabcare
    3680 N Moorpark Rd, Thousand Oaks, CA 91360 · Ventura CountyPhone(949) 951-2770

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

Lydia Somi Park is affiliated with 2 sites of care and 1 medical group

Lydia Park's primary practice is Rehabcare in Thousand Oaks, California. The medical group on file is PrimoMD. Dmand AI also links Lydia Park to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Lydia Park

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

Dmand AI tracks the EHR system at Lydia Somi Park's practice

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

EHR by site
SiteEHR vendor and product
RehabcareAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Lydia Somi Park is one of 16,751 internists in California

Internal medicine is Lydia Park's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Lydia Park is board certified in internal medicine by the American Board of Internal Medicine. Lydia Park has a license on file in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense A166501 · 2019 to 2025 · taxonomy 207R00000X

Clinical focus

Dmand AI lists acid reflux, acute sinusitis, acute skin infection, adjustment disease, alcohol use disorders, alzheimer's disease, aneurysm and ankle or foot injury among the conditions Lydia Park treats.

Internists near Lydia Park

Counts of internists 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

Lydia Somi Park billed Medicare for 755 services in 2024

CMS data shows 755 Medicare services from Lydia Park across 11 procedure codes in 2024, for 338 Medicare patients. Medicare paid $55,323 for them.

Medicare services, 2024755
Medicare patients338
Paid by Medicare$55,323
Procedure codes11

Lydia Park's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 5812024: 47119%
Other services
2023: 1432024: 24269%
Tests and treatments
2023: 622024: 4232%

Where Lydia Park's Medicare services took place, 2024

  • In an office65487%
  • In a facility10113%

Lydia Park compared with the California median for internists, 2024

  • Lydia Park
  • California median
Medicare services
755vs 3612.1 times
Medicare patients
338vs 1512.2 times
Part D claims
2,096vs 4215.0 times

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Lydia Park'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

Lydia Somi Park treated 338 Medicare patients in 2024, average age 76

CMS counts 338 Medicare patients who saw Lydia Park in 2024. The largest group is 65 to 74, with 136 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 23% 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 Lydia Park's median patient age at 57, with 72% women.

Medicare patients, 2024338
Average age76
Average risk score1.41
Also on Medicaid23%

Lydia Park's Medicare patients by age, 2024

Lydia Park's Medicare patients by sex, 2024

  • Women21664%
  • Men12236%

Chronic conditions among Lydia Park's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure71%
  3. Arthritis48%
  4. Mood disorders34%
  5. Anxiety33%
  6. Depression30%
  7. Chronic kidney disease29%
  8. Diabetes28%

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

Lydia Park's patients across all payers

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

Patient panel by age, all payers

Median age 57

Patient panel by sex, all payers

  • Women72%
  • Men25%

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

Lydia Somi Park wrote 2,757 Medicare Part D claims in 2024

In 2024, Lydia Park wrote 2,757 Medicare Part D claims for 322 patients. 86% of them were for generic drugs. CMS names the drug for 2,096 of them, across 61 drugs with 11 or more claims each, at $221,450 in total drug cost. In 2023, CMS named 3,125 claims across 80 drugs.

Part D claims, 20242,757
Drugs named by CMS61
Total drug cost$221,450
Part D patients322

Lydia Park's Part D claims by kind of drug, 2024

  • Generic2,384 claims86%
  • Brand-name359 claims13%
  • Other14 claims1%

Lydia Park'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 Lydia Park's Part D claims, 2024

  • Opioids1%40 of 2,757 claims
  • Antibiotics1%29 of 2,757 claims
  • Antipsychotics, patients 65 and over0%11 of 2,757 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: 3,1252024: 2,09633%

Drugs named by CMS: 61 in 2024, 80 in 2023.

See all prescribing by Lydia Park

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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Lydia Somi Park has 1 publication on record

Dmand AI links 1 paper to Lydia Park in 2017. Lydia Park's most frequent co-authors are Julie L. Fudge, MD, Ria Pal, MD and Lydia S. Park, DO.

Papers1

Lydia Park's most frequent co-authors

Recent publications by Lydia Park

See all 1 publications and co-authors

See who Lydia Park researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Lydia Park works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Lydia Somi Park received $182 in industry payments from 2019 to 2024

CMS Open Payments shows 9 general payments to Lydia Park from 8 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $43.

General payments to Lydia Park by program year, 2019 to 2024

Companies that paid Lydia Park the most, 2019 to 2024

Share is of all general payments to this clinician.

See all payments to Lydia Park

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Lydia Somi Park graduated from Jacobs School of Medicine and Biomedical Sciences

Lydia Park graduated from Jacobs School of Medicine and Biomedical Sciences in 2018.

  1. Medical schoolJacobs School of Medicine and Biomedical Sciences
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Lydia Somi Park accepts plans from 6 insurance carriers

Lydia Park is in network with 6 carriers, including Elevance, Excellus BlueCross BlueShield and United Healthcare. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Elevance
  • Excellus BlueCross BlueShield
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare

Plan types Lydia Park accepts, by number of carriers

  1. HMO4
  2. Medicare4
  3. POS4
  4. PPO4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Lydia Somi Park'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 Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
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 Lydia Somi Park

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

What is Lydia Somi Park's NPI number?

Lydia Somi Park's NPI number is 1235620287. It was assigned on May 25, 2018, and it is active in the NPI Registry.

What does Lydia Somi Park specialize in?

Lydia Somi Park is an internist in Thousand Oaks, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Lydia Somi Park practice?

Lydia Park practices at 3680 N Moorpark Rd, Thousand Oaks, CA 91360. Lydia Park's primary practice is Rehabcare in Thousand Oaks, California. Dmand AI also links Lydia Park to 1 group practice or clinic.

What is Lydia Somi Park's office phone number?

The practice phone on file for Lydia Park is (949) 951-2770.

What is Lydia Somi Park's medical license number?

Lydia Park's California license number on file is A166501.

What medical group is Lydia Somi Park part of?

Lydia Park is linked to PrimoMD.

Does Lydia Somi Park accept Medicare?

Yes. CMS data shows Lydia Park billed Medicare for 755 services in 2024.

How many Medicare patients does Lydia Somi Park see?

CMS counts 338 Medicare patients who saw Lydia Park in 2024, with an average age of 76.

Is Lydia Somi Park board certified?

Yes. Lydia Park is board certified in internal medicine by the American Board of Internal Medicine.

What services does Lydia Somi Park bill to Medicare?

In 2024, Lydia Park's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and nursing facility care (99304).

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Where did Lydia Somi Park go to medical school?

Lydia Park graduated from Jacobs School of Medicine and Biomedical Sciences in 2018.

What drugs does Lydia Somi Park prescribe most?

In 2024 Medicare Part D data, Lydia Park's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Gabapentin.

Has Lydia Somi Park received payments from drug or device companies?

CMS Open Payments shows $182 in general payments to Lydia Park from 8 companies from 2019 to 2024. The largest total came from Alexion Pharmaceuticals, Inc.

How long has Lydia Somi Park been practicing?

Lydia Park graduated from medical school in 2018, 8 years ago.

Does Lydia Somi Park do research?

Dmand AI links 1 publication to Lydia Park.

Who does Lydia Somi Park publish with?

Lydia Park's most frequent co-authors are Julie L. Fudge, MD (1 shared paper), Ria Pal, MD (1 shared paper) and Lydia S. Park, DO (1 shared paper).

What insurance does Lydia Somi Park accept?

Lydia Park is in network with 6 carriers, including Elevance, Excellus BlueCross BlueShield and United Healthcare. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.

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