Dr. Douglas Lienesch, MD

  • Newark, DE
  • Rheumatologist
NPI1124129747PAC ID5890746499
Medicare services, 2024
797
Medicare patients, 2024
529
Part D claims, 2024
2,976
Publications
4
Hospital affiliations
5
Practice address
4735 Ogletown Stanton Rd, Newark, DE 19713
Practice phone
Call (302) 428-2522
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

CCHS Rheumatology

Newark, Delaware

See all 9 affiliations

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Dr. Douglas Lienesch is a rheumatologist in Newark, Delaware

Dr. Lienesch practices at CCHS Rheumatology in Newark, Delaware.

Dr. Lienesch's NPI, 1124129747, was assigned on September 26, 2006. Dr. Lienesch holds Delaware license C1-0013313.

NPI and contact details
Medicare PAC ID
5890746499
NPI enumeration date
September 26, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(302) 428-2522
Professional email
Get email
Personal email
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Mobile number
Get number
Sex
Male
Estimated age
63
Medical school graduation
1989

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Douglas Lienesch practices at CCHS Rheumatology in Newark, Delaware

Dr. Lienesch's primary practice is CCHS Rheumatology, at 4735 Ogletown Stanton Rd, Newark, DE 19713 in New Castle County. The practice phone is (302) 428-2522.

  • CCHS Rheumatology
    4735 Ogletown Stanton Rd, Newark, DE 19713 · New Castle CountyPhone(302) 428-2522

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Douglas Lienesch is affiliated with 7 sites of care and 2 medical groups

Dr. Lienesch's primary practice is CCHS Rheumatology in Newark, Delaware. Dr. Lienesch is also affiliated with Christiana Hospital. The medical group on file is ChristianaCare. Dmand AI also links Dr. Lienesch to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.

See all 9 affiliations for Dr. Lienesch

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Douglas Lienesch's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lienesch practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
CCHS RheumatologyAvailable with a free account
+6 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Douglas Lienesch is one of 18 rheumatologists in Delaware

Rheumatology is Dr. Lienesch's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Lienesch is board certified in rheumatology by the American Board of Internal Medicine. Dmand AI has Dr. Lienesch's licenses on file in 2 states: Delaware and Pennsylvania.

Specialties and state licenses

  • Rheumatology, DelawarePrimaryLicense C1-0013313 · taxonomy 207RR0500X
  • Pennsylvania licenseLicense MD428000

Rheumatologists near Dr. Lienesch

Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.

18rheumatologists in Delaware
5rheumatologists in Newark

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Douglas Lienesch billed Medicare for 797 services in 2024

CMS data shows 797 Medicare services from Dr. Lienesch across 8 procedure codes in 2024, for 529 Medicare patients. Medicare paid $62,550 for them.

Medicare services, 2024797
Medicare patients529
Paid by Medicare$62,550
Procedure codes8

Dr. Lienesch's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 6382024: 79725%
Surgery
2023: 162024: 0100%

Where Dr. Lienesch's Medicare services took place, 2024

  • In an office11114%
  • In a facility68686%

Dr. Lienesch compared with the Delaware median for rheumatologists, 2024

  • Dr. Lienesch
  • Delaware median
Medicare services
797vs 81,84099% below
Medicare patients
529vs 529Close to median
Part D claims
2,761vs 1,1712.4 times

Medians across 19 rheumatologists in Delaware with Dmand AI profiles that report each measure.

Dr. Lienesch's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Lienesch

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Douglas Lienesch treated 529 Medicare patients in 2024, average age 73

CMS counts 529 Medicare patients who saw Dr. Lienesch in 2024. The largest group is 65 to 74, with 244 patients. 75% of them have arthritis, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Lienesch's median patient age at 68, with 77% women.

Medicare patients, 2024529
Average age73
Average risk score1.43
Also on Medicaid10%

Dr. Lienesch's Medicare patients by age, 2024

Dr. Lienesch's Medicare patients by sex, 2024

  • Women41078%
  • Men11922%

Chronic conditions among Dr. Lienesch's Medicare patients, 2024

  1. Arthritis75%
  2. High cholesterol75%
  3. High blood pressure73%
  4. Osteoporosis41%
  5. Diabetes30%
  6. Anxiety29%
  7. Mood disorders29%
  8. Chronic kidney disease27%

Share of Medicare patients with each condition. A patient can have several.

Dr. Lienesch's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 68

Patient panel by sex, all payers

  • Women77%
  • Men21%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Douglas Lienesch wrote 2,976 Medicare Part D claims in 2024

In 2024, Dr. Lienesch wrote 2,976 Medicare Part D claims for 479 patients. 86% of them were for generic drugs. CMS names the drug for 2,761 of them, across 50 drugs with 11 or more claims each, at $2,000,897 in total drug cost. In 2023, CMS named 2,147 claims across 40 drugs.

Part D claims, 20242,976
Drugs named by CMS50
Total drug cost$2M
Part D patients479

Dr. Lienesch's Part D claims by kind of drug, 2024

  • Generic2,565 claims86%
  • Brand-name397 claims13%
  • Other14 claims0%

Dr. Lienesch'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. Lienesch's Part D claims, 2024

  • Opioids3%83 of 2,976 claims
  • Antibiotics1%19 of 2,976 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: 2,1472024: 2,76129%

Drugs named by CMS: 50 in 2024, 40 in 2023.

See all prescribing by Dr. Lienesch

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. Douglas Lienesch offers telehealth to Medicare patients

Dr. Lienesch accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lienesch as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Douglas Lienesch has 4 publications on record

Dmand AI links 4 papers to Dr. Lienesch. The most frequent topics are Arthritis, Rheumatoid and Cryoglobulinemia. Dr. Lienesch's most frequent co-authors are Rohit Aggarwal, MD and Jeremy Scott Tilstra, MD, PhD.

Papers4

Topics Dr. Lienesch writes about most

  • Arthritis, Rheumatoid
  • Cryoglobulinemia

Dr. Lienesch's most frequent co-authors

Recent publications by Dr. Lienesch

See all 4 publications and co-authors

See who Dr. Lienesch researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lienesch works with, so you can find a warm path to the right rheumatologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Douglas Lienesch received $871 in industry payments from 2016 to 2025

CMS Open Payments shows 22 general payments to Dr. Lienesch from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 71% of the total. Amgen Inc. paid the most, $285.

General payments to Dr. Lienesch by program year, 2016 to 2025

General payments to Dr. Lienesch by kind, 2016 to 2025

$871in total
  • Food and beverage$61671%
  • Consulting fees$20023%
  • Education$556%

Companies that paid Dr. Lienesch the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Lienesch

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Douglas Lienesch is board certified in rheumatology

  1. Board certified in rheumatologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Douglas Lienesch's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Douglas Lienesch

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. Douglas Lienesch's NPI number?

Dr. Douglas Lienesch's NPI number is 1124129747. It was assigned on September 26, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Douglas Lienesch?

Dr. Douglas Lienesch is a rheumatologist in Newark, Delaware. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).

Where does Dr. Douglas Lienesch practice?

Dr. Lienesch practices at 4735 Ogletown Stanton Rd, Newark, DE 19713. Dr. Lienesch's primary practice is CCHS Rheumatology in Newark, Delaware. Dmand AI also links Dr. Lienesch to 4 hospitals, 1 group practice or clinic and 1 medical group.

What is Dr. Douglas Lienesch's office phone number?

The practice phone on file for Dr. Lienesch is (302) 428-2522.

What is Dr. Douglas Lienesch's medical license number?

Dr. Lienesch holds Delaware license C1-0013313, one of the licenses on file in 2 states.

Which states has Dr. Douglas Lienesch been licensed in?

Dmand AI has state licenses on file for Dr. Lienesch in Delaware and Pennsylvania.

Which hospitals is Dr. Douglas Lienesch affiliated with?

Dr. Lienesch is affiliated with Christiana Hospital. Dmand AI links Dr. Lienesch to 4 more hospitals.

What medical group is Dr. Douglas Lienesch part of?

Dr. Lienesch is linked to ChristianaCare. Dmand AI links Dr. Lienesch to 1 more medical group.

Does Dr. Douglas Lienesch accept Medicare?

Yes. CMS data shows Dr. Lienesch billed Medicare for 797 services in 2024, and Dr. Lienesch accepts Medicare assignment.

Does Dr. Douglas Lienesch offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Lienesch as offering telehealth services.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Douglas Lienesch see?

CMS counts 529 Medicare patients who saw Dr. Lienesch in 2024, with an average age of 73.

Is Dr. Douglas Lienesch board certified?

Yes. Dr. Lienesch is board certified in rheumatology by the American Board of Internal Medicine.

What services does Dr. Douglas Lienesch bill to Medicare?

In 2024, Dr. Lienesch's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99204).

What drugs does Dr. Douglas Lienesch prescribe most?

In 2024 Medicare Part D data, Dr. Lienesch's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Prednisone and Methotrexate.

Has Dr. Douglas Lienesch received payments from drug or device companies?

CMS Open Payments shows $871 in general payments to Dr. Lienesch from 7 companies from 2016 to 2025. The largest total came from Amgen Inc.

How long has Dr. Douglas Lienesch been practicing?

Dr. Lienesch graduated from medical school in 1989, 37 years ago.

Does Dr. Douglas Lienesch do research?

Dmand AI links 4 publications to Dr. Lienesch.

Who does Dr. Douglas Lienesch publish with?

Dr. Lienesch's most frequent co-authors are Rohit Aggarwal, MD (1 shared paper) and Jeremy Scott Tilstra, MD, PhD (1 shared paper).

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