Dr. Chen Lang, MD
- Part D claims, 2024
- 348
- Hospital affiliations
- 2
- Industry payments
- $76
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 1777 West Yosemite Ave, Manteca, CA 95337
- Practice phone
- Call (209) 825-3700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lang's professional email, personal email and mobile number
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Dr. Chen Lang is a urologist in Manteca, California
Dr. Lang practices at Manteca Medical Center in Manteca, California, part of Kaiser Permanente.
Dr. Lang's NPI, 1457512592, was assigned on June 20, 2008. Dr. Lang graduated from Feinberg School of Medicine in 2004. Dr. Lang's Illinois license number on file is 036117847.
- NPI
- 1457512592NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365636271
- NPI enumeration date
- June 20, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (209) 825-3700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chen Lang practices at Manteca Medical Center in Manteca, California
Dr. Lang's primary practice is Manteca Medical Center, at 1777 West Yosemite Ave, Manteca, CA 95337 in San Joaquin County. The practice phone is (209) 825-3700.
- Manteca Medical Center1777 West Yosemite Ave, Manteca, CA 95337 · San Joaquin CountyPhone(209) 825-3700
Source: Dmand AI Affiliation Data
Dr. Chen Lang is affiliated with 2 sites of care and 1 medical group
Dr. Lang's primary practice is Manteca Medical Center in Manteca, California, part of Kaiser Permanente. Dr. Lang is also affiliated with Loyola University Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chen Lang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Manteca Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chen Lang is one of 1,395 urologists in California
Urology is Dr. Lang's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Lang is board certified in urology by the American Board of Urology. Dmand AI has Dr. Lang's licenses on file in 2 states: Illinois and California.
Specialties and state licenses
- Urology, IllinoisPrimary
- California license
Clinical focus
Dmand AI lists urinary endoscopy among the conditions Dr. Lang treats.
Urologists near Dr. Lang
Counts of urologists 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. Chen Lang's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Lang's median patient age at 66, with 23% women.
Dr. Lang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women23%
- Men77%
Source: Dmand AI Patient Panel Data
Dr. Chen Lang wrote 348 Medicare Part D claims in 2024
In 2024, Dr. Lang wrote 348 Medicare Part D claims for 173 patients. 99% of them were for generic drugs. CMS names the drug for 281 of them, across 6 drugs with 11 or more claims each, at $4,254 in total drug cost. In 2023, CMS named 321 claims across 8 drugs.
Dr. Lang's Part D claims by kind of drug, 2024
- Generic344 claims99%
- Brand-name and other4 claims1%
Dr. Lang'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. Lang's Part D claims, 2024
- Opioids7%25 of 348 claims
- Antibiotics27%94 of 348 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: 3212024: 28112%
Drugs named by CMS: 6 in 2024, 8 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. Chen Lang offers telehealth to Medicare patients
Dr. Lang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chen Lang received $76 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Lang from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $76.
Companies that paid Dr. Lang the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chen Lang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Lang, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Lang
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Chen Lang graduated from Feinberg School of Medicine
Dr. Lang graduated from Feinberg School of Medicine in 2004.
- Medical school
- Board certified in urology
Source: Dmand AI Professional Profile Data
Dr. Chen Lang accepts plans from 2 insurance carriers
Dr. Lang 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. Lang accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chen Lang'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Chen Lang
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. Chen Lang's NPI number?
Dr. Chen Lang's NPI number is 1457512592. It was assigned on June 20, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Chen Lang?
Dr. Chen Lang is a urologist in Manteca, California. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Chen Lang practice?
Dr. Lang practices at 1777 West Yosemite Ave, Manteca, CA 95337. Dr. Lang's primary practice is Manteca Medical Center in Manteca, California, part of Kaiser Permanente.
What is Dr. Chen Lang's office phone number?
The practice phone on file for Dr. Lang is (209) 825-3700.
What is Dr. Chen Lang's medical license number?
Dr. Lang's Illinois license number on file is 036117847, one of the licenses on file in 2 states.
Which states has Dr. Chen Lang been licensed in?
Dmand AI has state licenses on file for Dr. Lang in Illinois (2004 to 2011) and California (2010 to 2026).
Which hospitals is Dr. Chen Lang affiliated with?
Dr. Lang practices at Manteca Medical Center in Manteca, California. Dr. Lang is also affiliated with Loyola University Medical Center.
What medical group is Dr. Chen Lang part of?
Dr. Lang is linked to The Permanente Medical Group, Inc.
Does Dr. Chen Lang accept Medicare?
Yes. CMS lists Dr. Lang as accepting Medicare assignment.
Does Dr. Chen Lang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lang as offering telehealth services.
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Is Dr. Chen Lang board certified?
Yes. Dr. Lang is board certified in urology by the American Board of Urology.
Where did Dr. Chen Lang go to medical school?
Dr. Lang graduated from Feinberg School of Medicine in 2004.
What drugs does Dr. Chen Lang prescribe most?
In 2024 Medicare Part D data, Dr. Lang's most prescribed drugs by claims were Tamsulosin HCl, Ciprofloxacin HCl and Trospium Chloride.
Has Dr. Chen Lang received payments from drug or device companies?
CMS Open Payments shows $76 in general payments to Dr. Lang from 1 company from 2016 to 2016. The largest total came from Genentech, Inc.
How long has Dr. Chen Lang been practicing?
Dr. Lang graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Chen Lang accept?
Dr. Lang 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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