NPPES file of Aug 9, 2026

Tik Lung Dion Fung, M.D.

Neurology Physician · Lancaster, CA

Tik Lung Dion Fung, M.D. is a neurology physician with a practice address in Lancaster, California, and NPI 1710167994, issued on Nov 6, 2007. Check the license (California A98198, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1710167994
Name
Tik Lung Dion Fung
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
A98198 CA
Self-reported in NPPES; status is on the state search
Practice location
42135 10TH St W, Lancaster, CA 93534
Phone
(661) 945-6931
Enumerated
Nov 6, 2007
Record last updated
Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(661) 945-4592
Medicare enrollment
Enrolled (PECOS I20120126000124); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 42135 10TH St W

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alon Antebi, DOOrthopaedic Trauma Physician1639174816
  2. Gerard Boghossian, D.P.M.Podiatrist1942263322
  3. Sandra Callaghan, FNPFamily Nurse Practitioner1780970517
  4. Manprit Dhillon, MDNeurological Surgery Physician1710963038
  5. Abdallah Farrukh, MDNeurological Surgery Physician1932135266
  6. Justin Heller, MDPlastic Surgery Physician1639373590

Verify Tik Lung Dion Fung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A98198
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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12% more Medicare Part D claims than the average neurology physician in 2024

1,532 Medicare Part D claims for 337 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. 17 claims were for opioids.

  1. Tik Lung Dion Fung1,532
  2. Specialty average1,370

Most prescribed

  1. Carbidopa-Levodopa154 claims
  2. Levetiracetam153 claims
  3. Gabapentin146 claims
  4. Primidone89 claims
  5. Sumatriptan Succinate69 claims
  6. Propranolol Hcl64 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupOntario, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Tik Lung Dion Fung among 2,339 neurology physician records in California

Tik Lung Dion Fung, M.D. is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.

  • NPI issued2007 · 41% of these records are older, 48% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2004 · median 2006 among the 1,628 with a school on file
  • Record last updated2021 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

The 8 neurology physician records with the nearest ZIP codes

  1. Lingaiah Janumpally, MDLancaster, CA 935341003892316
  2. Shirisha Janumpally, M.D.Lancaster, CA 935341215128020
  3. Kamran Kabolizadeh, MDLancaster, CA 935341184831273
  4. Gautam Kareti, MDLancaster, CA 935341134326697
  5. Yu-En Lee, MDLancaster, CA 935341982682670
  6. Vijay Shanmugam, M.D.Lancaster, CA 935341174576839
  7. Albert Will, M.D.Bishop, CA 935141497801112
  8. Amr Al-Hariri, M.D.Templeton, CA 934651497862254

Common questions

What is Tik Lung Dion Fung, M.D.'s NPI number?

Tik Lung Dion Fung, M.D.'s National Provider Identifier (NPI) is 1710167994, issued on Nov 6, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Tik Lung Dion Fung, M.D. located?

The NPPES record lists a practice address at 42135 10TH St W, Lancaster, CA, 93534. Phone: (661) 945-6931. Providers update this record themselves, so call before visiting.

How can I verify Tik Lung Dion Fung, M.D.'s license?

NPPES lists California license number A98198, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Tik Lung Dion Fung, M.D. prescribe under Medicare Part D?

In 2024, Tik Lung Dion Fung, M.D. had 1,532 Medicare Part D claims for 337 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.