Doris Derwen Ling, M.D.
Family Medicine Physician · San Antonio, TX
Doris Derwen Ling, M.D. is a family medicine physician with a practice address in San Antonio, Texas, and NPI 1851338420, issued on Jun 1, 2006. Check the license (Texas K2741, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Doris Derwen Ling
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- K2741 TX
Self-reported in NPPES; status is on the state search - Practice location
- 8715 Village Dr, San Antonio, TX 78217
- Phone
- (210) 637-0000
- Enumerated
- Jun 1, 2006
- Record last updated
- Oct 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (210) 654-9840
- Medicare enrollment
- Enrolled (PECOS I20040920000870); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 8715 Village Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Doris Derwen Ling in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K2741Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average family medicine physician in 2024
3,493 Medicare Part D claims for 282 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 45 claims were for opioids.
Most prescribed
- Lisinopril247 claims
- Rosuvastatin Calcium204 claims
- Atorvastatin Calcium188 claims
- Amlodipine Besylate143 claims
- Levothyroxine Sodium121 claims
- Alendronate Sodium96 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: $667.91
34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Bhs Physicians Network, IncSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Doris Derwen Ling among 11,119 family medicine physician records in Texas
Doris Derwen Ling, M.D. is one of 11,119 family medicine physician records with a practice address in Texas. 82% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1996 · median 2004 among the 7,095 with a school on file
- Record last updated2011 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
809 family medicine physician records list a practice address in San Antonio
They are 809 of the 37,749 NPPES records with a practice address in San Antonio, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in San Antonio → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christopher Caulfield, MDSan Antonio, TX 782171790710051
- Kevin Comfort, M.D.San Antonio, TX 782171588611024
- Robert Freeman, MDSan Antonio, TX 782171861492787
- Richard Hernandez, MDSan Antonio, TX 782171336242023
- Harry Hernandez, DOSan Antonio, TX 782171659474211
- Tamre McClelland, M.D.San Antonio, TX 782171871601385
- Wiley Patterson, M.D.San Antonio, TX 782171396963989
- Edward Reed, MDSan Antonio, TX 782171841276524
Common questions
What is Doris Derwen Ling, M.D.'s NPI number?
Doris Derwen Ling, M.D.'s National Provider Identifier (NPI) is 1851338420, issued on Jun 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Doris Derwen Ling, M.D. located?
The NPPES record lists a practice address at 8715 Village Dr, San Antonio, TX, 78217. Phone: (210) 637-0000. Providers update this record themselves, so call before visiting.
How can I verify Doris Derwen Ling, M.D.'s license?
NPPES lists Texas license number K2741, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Doris Derwen Ling, M.D. prescribe under Medicare Part D?
In 2024, Doris Derwen Ling, M.D. had 3,493 Medicare Part D claims for 282 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.