Frederick Joseph Nachtwey, M.D.
Pulmonary Disease Physician · Walnut Creek, CA
Frederick Joseph Nachtwey, M.D. is a pulmonary disease physician with a practice address in Walnut Creek, California, and NPI 1710901822, issued on Jul 26, 2006. Check the license (California G35274, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frederick Joseph Nachtwey
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- G35274 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2637 Shadelands Dr, Walnut Creek, CA 94598
- Phone
- (925) 944-0166
- Enumerated
- Jul 26, 2006
- Record last updated
- Mar 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20090112000757); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1974
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 2637 Shadelands Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anita Anand, NPFamily Nurse Practitioner1023993102
- Stacyann Andaya, NPFamily Nurse Practitioner1649893660
- Audrey Arzamendi, M.D.Endocrinology, Diabetes & Metabolism Physician1508159567
- Anthony Bernens, MDInternal Medicine Physician1215983440
- Jennifer Chan, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1265634687
- Heidi Chang, MDObstetrics & Gynecology Physician1649681982
Verify Frederick Joseph Nachtwey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G35274Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average pulmonary disease physician in 2024
1,494 Medicare Part D claims for 229 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa173 claims
- Wixela Inhub124 claims
- Trelegy Ellipta103 claims
- Prednisone89 claims
- Zolpidem Tartrate89 claims
- Fluticasone-Salmeterol70 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.
The MIPS final score for 2023 (Medicare payment program): 87.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,906.02
79 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bass Medical GroupAlamo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frederick Joseph Nachtwey among 1,443 pulmonary disease physician records in California
Frederick Joseph Nachtwey, M.D. is one of 1,443 pulmonary disease physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1974 · median 2002 among the 1,061 with a school on file
- Record last updated2025 · 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 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Walnut Creek → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Elvio Ardilles, MDWalnut Creek, CA 945981518905322
- Vala Berjis, M.D.Walnut Creek, CA 945981023135761
- Ka Ling (karin) Cheung, M.D.Walnut Creek, CA 945981881643831
- Anne Grzegorczyk, M.D.Walnut Creek, CA 945981720434004
- George Juan, M.D.Walnut Creek, CA 945981619273364
- Matthew LyonsWalnut Creek, CA 945981457714933
- Ming-Tyh Maa, M.D.Walnut Creek, CA 945981073718722
- Manjari Nathan, M.D.Walnut Creek, CA 945981033386503
Common questions
What is Frederick Joseph Nachtwey, M.D.'s NPI number?
Frederick Joseph Nachtwey, M.D.'s National Provider Identifier (NPI) is 1710901822, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick Joseph Nachtwey, M.D. located?
The NPPES record lists a practice address at 2637 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 944-0166. Providers update this record themselves, so call before visiting.
How can I verify Frederick Joseph Nachtwey, M.D.'s license?
NPPES lists California license number G35274, 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 Frederick Joseph Nachtwey, M.D. prescribe under Medicare Part D?
In 2024, Frederick Joseph Nachtwey, M.D. had 1,494 Medicare Part D claims for 229 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Frederick Joseph Nachtwey, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.