NPPES file of Aug 9, 2026

Karl Friedrich Vontiehl, M.D.

Allergy & Immunology Physician · San Marino, CA

Karl Friedrich Vontiehl, M.D. is an allergy & immunology physician with a practice address in San Marino, California, and NPI 1013165869, issued on Sep 5, 2008. Check the license (California A95085, 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
1013165869
Name
Karl Friedrich Vontiehl
Credential
M.D.
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License number
A95085 CA
Self-reported in NPPES; status is on the state search
Practice location
375 Huntington Dr, San Marino, CA 91108
Phone
(626) 460-6038
Enumerated
Sep 5, 2008
Record last updated
Jul 12, 2023
Fax
(877) 886-6123
Medicare enrollment
Enrolled (PECOS I20131202001856); accepts Medicare assignment
Medical or professional school
Medical College Of Ohio, 2004
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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8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →

Also registered at 375 Huntington Dr

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

  1. Lorna Blanco, M.D.Specialist1093787178
  2. Sonya Chen-Hsieh, MDFamily Medicine Physician1528017894
  3. Mu-Chien Chiang, D.O.Internal Medicine Physician1831322148
  4. Louis Countryman, M.D.Specialist1184612327
  5. Chien Fang, MDInternal Medicine Physician1922071398
  6. Jeffrey Huang, D.O.Ophthalmology Physician1124274998

Verify Karl Friedrich Vontiehl in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A95085    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

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73% fewer Medicare Part D claims than the average allergy & immunology physician in 2024

198 Medicare Part D claims for 59 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.

  1. Karl Vontiehl198
  2. Specialty average741

Most prescribed

  1. Epinephrine19 claims
  2. Montelukast Sodium18 claims
  3. Dupixent Syringe14 claims
  4. Albuterol Sulfate Hfa12 claims
  5. Azelastine Hcl12 claims
  6. Triamcinolone Acetonide12 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.

Industry payments in 2024: $819.01

33 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karl Vontiehl$819.01
  2. Specialty average$8,321.81

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Karl Friedrich Vontiehl among 444 allergy & immunology physician records in California

Karl Friedrich Vontiehl, M.D. is one of 444 allergy & immunology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 62% of them.

  • NPI issued2008 · 62% of these records are older, 32% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2004 · median 2004 among the 281 with a school on file
  • Record last updated2023 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology Physician providers in California

There are 444 allergy & immunology physician records in California.

All 444 in California → Every provider in San Marino → Allergy & Immunology Physician nationwide →

The 8 allergy & immunology physician records with the nearest ZIP codes

  1. Sonal Patel, MDPasadena, CA 911061346376894
  2. Joshua Ang, DOPasadena, CA 911011699398016
  3. Kevin Farnam, M.D.Pasadena, CA 911011598092330
  4. Flora Vardanian, MDPasadena, CA 911011184772048
  5. Jean Hanley, M.D.Glendale, CA 912021073835617
  6. Timothy Pham, MDArcadia, CA 910071457549826
  7. Michael Roberts, M.D.West Hills, CA 913071376567842
  8. Ami Philipp, M.D.Porter Ranch, CA 913261699040782

Common questions

What is Karl Friedrich Vontiehl, M.D.'s NPI number?

Karl Friedrich Vontiehl, M.D.'s National Provider Identifier (NPI) is 1013165869, issued on Sep 5, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Karl Friedrich Vontiehl, M.D. located?

The NPPES record lists a practice address at 375 Huntington Dr, San Marino, CA, 91108. Phone: (626) 460-6038. Providers update this record themselves, so call before visiting.

How can I verify Karl Friedrich Vontiehl, M.D.'s license?

NPPES lists California license number A95085, 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 Karl Friedrich Vontiehl, M.D. prescribe under Medicare Part D?

In 2024, Karl Friedrich Vontiehl, M.D. had 198 Medicare Part D claims for 59 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.