Dr. Lon Jacobus Taff, MD
- Part D claims, 2024
- 391
- Publications
- 1
- Hospital affiliations
- 1
- Medical groups
- 2
- Insurance carriers
- 2
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Taff's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Lon Jacobus Taff is an OB-GYN in Stockton, California
Dr. Taff practices at Permanente Medical Group Inc in Stockton, California.
Dr. Taff's NPI, 1548254295, was assigned on September 8, 2005. Dr. Taff graduated from Rush Medical College in 1999. Dr. Taff holds California license C54503.
- NPI
- 1548254295NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092991224
- NPI enumeration date
- September 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lon Jacobus Taff practices at Permanente Medical Group Inc in Stockton, California
Dr. Taff's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Lon Jacobus Taff is affiliated with 2 sites of care and 2 medical groups
Dr. Taff's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Taff is also affiliated with Kaiser Permanente South Sacramento Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Taff to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lon Jacobus Taff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Taff practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lon Jacobus Taff is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Taff's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Taff is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Taff's licenses on file in 3 states: California, Colorado and Illinois.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Colorado license
- Illinois license
OB-GYNs near Dr. Taff
Counts of OB-GYNs 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
Dr. Lon Jacobus Taff's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Taff's median patient age at 37, with 100% women.
Dr. Taff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Lon Jacobus Taff wrote 391 Medicare Part D claims in 2024
In 2024, Dr. Taff wrote 391 Medicare Part D claims for 209 patients. 92% of them were for generic drugs. CMS names the drug for 237 of them, across 8 drugs with 11 or more claims each, at $20,263 in total drug cost. In 2023, CMS named 186 claims across 5 drugs.
Dr. Taff's Part D claims by kind of drug, 2024
- Generic360 claims92%
- Brand-name31 claims8%
Dr. Taff'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 Dr. Taff's Part D claims, 2024
- Antibiotics6%22 of 391 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: 1862024: 23727%
Drugs named by CMS: 8 in 2024, 5 in 2023.
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
Dr. Lon Jacobus Taff offers telehealth to Medicare patients
Dr. Taff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Taff as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Lon Jacobus Taff has 1 publication on record
Dmand AI links 1 paper to Dr. Taff.
Recent publications by Dr. Taff
See who Dr. Taff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Taff works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Lon Jacobus Taff graduated from Rush Medical College
Dr. Taff graduated from Rush Medical College in 1999.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Lon Jacobus Taff accepts plans from 2 insurance carriers
Dr. Taff is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Taff accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Lon Jacobus Taff's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Lon Jacobus Taff
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Lon Jacobus Taff's NPI number?
Dr. Lon Jacobus Taff's NPI number is 1548254295. It was assigned on September 8, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Lon Jacobus Taff?
Dr. Lon Jacobus Taff is an OB-GYN in Stockton, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Lon Jacobus Taff practice?
Dr. Taff practices at 7373 West Ln, Stockton, CA 95210. Dr. Taff's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Taff to 1 medical group.
What is Dr. Lon Jacobus Taff's office phone number?
The practice phone on file for Dr. Taff is (209) 476-2000.
What is Dr. Lon Jacobus Taff's medical license number?
Dr. Taff holds California license C54503, one of the licenses on file in 3 states.
Which states has Dr. Lon Jacobus Taff been licensed in?
Dmand AI has state licenses on file for Dr. Taff in California (2011 to 2027), Colorado (2010 to 2017) and Illinois (2002 to 2011).
Which hospitals is Dr. Lon Jacobus Taff affiliated with?
Dr. Taff is affiliated with Kaiser Permanente South Sacramento Medical Center.
What medical group is Dr. Lon Jacobus Taff part of?
Dr. Taff is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Taff to 1 more medical group.
Does Dr. Lon Jacobus Taff accept Medicare?
Yes. CMS lists Dr. Taff as accepting Medicare assignment.
Does Dr. Lon Jacobus Taff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Taff as offering telehealth services.
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Is Dr. Lon Jacobus Taff board certified?
Yes. Dr. Taff is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Lon Jacobus Taff go to medical school?
Dr. Taff graduated from Rush Medical College in 1999.
What drugs does Dr. Lon Jacobus Taff prescribe most?
In 2024 Medicare Part D data, Dr. Taff's most prescribed drugs by claims were Estradiol, Clobetasol Propionate and Trospium Chloride.
How long has Dr. Lon Jacobus Taff been practicing?
Dr. Taff graduated from medical school in 1999, 27 years ago.
Does Dr. Lon Jacobus Taff do research?
Dmand AI links 1 publication to Dr. Taff.
What insurance does Dr. Lon Jacobus Taff accept?
Dr. Taff is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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