Dr. Peter Edwin Darwin, MD
- Medicare services, 2024
- 488
- Medicare patients, 2024
- 361
- Part D claims, 2024
- 215
- Publications
- 56
- Industry payments
- $481
- Practice address
- 6111 Executive Blvd, Rockville, MD 20852
- Practice phone
- Call (301) 816-2424
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente Lutherville-Timonium Medical Center
Rockville, Maryland
Find Dr. Darwin's professional email, personal email and mobile number
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Dr. Peter Edwin Darwin is a gastroenterologist in Rockville, Maryland
Dr. Darwin practices at Kaiser Permanente Lutherville-Timonium Medical Center in Rockville, Maryland.
Dr. Darwin's NPI, 1649231481, was assigned on March 31, 2006. Dr. Darwin graduated from University of Maryland School of Medicine - Baltimore in 1990. Dr. Darwin holds Maryland license D42781.
- NPI
- 1649231481NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557558830
- NPI enumeration date
- March 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 816-2424
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter Edwin Darwin practices at Kaiser Permanente Lutherville-Timonium Medical Center in Rockville, Maryland
Dr. Darwin's primary practice is Kaiser Permanente Lutherville-Timonium Medical Center, at 6111 Executive Blvd, Rockville, MD 20852 in Montgomery County. The practice phone is (301) 816-2424.
- Kaiser Permanente Lutherville-Timonium Medical Center6111 Executive Blvd, Rockville, MD 20852 · Montgomery CountyPhone(301) 816-2424
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Peter Edwin Darwin is affiliated with 1 site of care and 2 medical groups
Dr. Darwin's primary practice is Kaiser Permanente Lutherville-Timonium Medical Center in Rockville, Maryland. The medical group on file is Mid-Atlantic Permanente Medical Group. Dmand AI also links Dr. Darwin to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Peter Edwin Darwin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Darwin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Lutherville-Timonium Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Peter Edwin Darwin is one of 405 gastroenterologists in Maryland
Gastroenterology is Dr. Darwin's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Darwin is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Darwin is licensed in Maryland.
Specialties and state licenses
- Gastroenterology, MarylandPrimary
Clinical focus
Dmand AI lists acute gallbladder or bile duct inflammation, colonoscopy, gastrointestinal bleeding, irritable bowel syndrome (IBS), pancreas or bile duct endoscopy (ERCP) and upper GI endoscopy among the conditions Dr. Darwin treats.
Gastroenterologists near Dr. Darwin
Counts of gastroenterologists 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. Peter Edwin Darwin billed Medicare for 488 services in 2024
CMS data shows 488 Medicare services from Dr. Darwin across 17 procedure codes in 2024, for 361 Medicare patients. Medicare paid $66,376 for them.
Dr. Darwin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 3242024: 3322%
- Office and hospital visits
- 2023: 1052024: 9410%
- Imaging
- 2023: 662024: 626%
Where Dr. Darwin's Medicare services took place, 2024
- In an office5812%
- In a facility43088%
Dr. Darwin compared with the Maryland median for gastroenterologists, 2024
- Dr. Darwin
- Maryland median
- Medicare services
- 488vs 66827% below
- Medicare patients
- 361vs 3907% below
- Part D claims
- 129vs 39267% below
Medians across 396 gastroenterologists in Maryland with Dmand AI profiles that report each measure.
Dr. Darwin'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.
Need commercial claims for Dr. Darwin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Darwin and other gastroenterologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter Edwin Darwin treated 361 Medicare patients in 2024, average age 73
CMS counts 361 Medicare patients who saw Dr. Darwin in 2024. The largest group is 65 to 74, with 163 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Darwin's median patient age at 57, with 59% women.
Dr. Darwin's Medicare patients by age, 2024
Dr. Darwin's Medicare patients by sex, 2024
- Women18551%
- Men17649%
Chronic conditions among Dr. Darwin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Diabetes46%
- Ischemic heart disease36%
- Chronic kidney disease34%
- Mood disorders29%
- Anxiety27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Darwin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter Edwin Darwin wrote 215 Medicare Part D claims in 2024
In 2024, Dr. Darwin wrote 215 Medicare Part D claims for 116 patients. 73% of them were for generic drugs. CMS names the drug for 129 of them, across 6 drugs with 11 or more claims each, at $19,370 in total drug cost. In 2023, CMS named 108 claims across 4 drugs.
Dr. Darwin's Part D claims by kind of drug, 2024
- Generic157 claims73%
- Brand-name58 claims27%
Dr. Darwin'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. Darwin's Part D claims, 2024
- Antibiotics6%12 of 215 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: 1082024: 12919%
Drugs named by CMS: 6 in 2024, 4 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
How Dr. Peter Edwin Darwin takes part in Medicare
Dr. Darwin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Peter Edwin Darwin has 56 publications on record
Dmand AI links 56 papers to Dr. Darwin, published from 2006 to 2024. 2016 was the busiest year, with 3. The most frequent topics are Cholangiopancreatography, Endoscopic Retrograde, Pancreatic Neoplasms and Endosonography. Dr. Darwin has published most often in Gastrointest Endosc. Dr. Darwin's most frequent co-authors are Lance T. Uradomo, MD, Varun Kesar, MD and Alexander Michael Lustberg, MD.
Dr. Darwin's papers by year, 2013 to 2024
Topics Dr. Darwin writes about most
- Cholangiopancreatography, Endoscopic Retrograde
- Pancreatic Neoplasms
- Endosonography
- Stents
- Biopsy, Fine-Needle
- Endoscopy
- Endoscopy, Digestive System
- Bile Duct Neoplasms
Dr. Darwin's most frequent co-authors
- Lance T. Uradomo, MD7 shared papers
- Varun Kesar, MD4 shared papers
- Alexander Michael Lustberg, MD3 shared papers
Recent publications by Dr. Darwin
Gastrointest Endosc
Gastrointest Endosc
Gastrointest Endosc
See who Dr. Darwin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Darwin works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Peter Edwin Darwin received $481 in industry payments from 2020 to 2025
CMS Open Payments shows 18 general payments to Dr. Darwin from 11 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Ambu Inc. paid the most, $148.
General payments to Dr. Darwin by program year, 2020 to 2025
Companies that paid Dr. Darwin the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Peter Edwin Darwin has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Darwin.
Awards and honors for Dr. Darwin
- Undated
- Checkbook Top Doc
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Peter Edwin Darwin graduated from University of Maryland School of Medicine - Baltimore
Dr. Darwin graduated from University of Maryland School of Medicine - Baltimore in 1990.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Peter Edwin Darwin accepts plans from 14 insurance carriers
Dr. Darwin is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CareFirst BlueCross BlueShield. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- CareFirst BlueCross BlueShield
- Cigna
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- +6 more carriersWith a free account
Plan types Dr. Darwin accepts, by number of carriers
- Medicare11
- PPO8
- HMO5
- POS3
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Peter Edwin Darwin'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 Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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)Doctors and Clinicians Utilization Data (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 |
| 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. Peter Edwin Darwin
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. Peter Edwin Darwin's NPI number?
Dr. Peter Edwin Darwin's NPI number is 1649231481. It was assigned on March 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter Edwin Darwin?
Dr. Peter Edwin Darwin is a gastroenterologist in Rockville, Maryland. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Peter Edwin Darwin practice?
Dr. Darwin practices at 6111 Executive Blvd, Rockville, MD 20852. Dr. Darwin's primary practice is Kaiser Permanente Lutherville-Timonium Medical Center in Rockville, Maryland. Dmand AI also links Dr. Darwin to 1 medical group.
What is Dr. Peter Edwin Darwin's office phone number?
The practice phone on file for Dr. Darwin is (301) 816-2424.
What is Dr. Peter Edwin Darwin's medical license number?
Dr. Darwin holds Maryland license D42781.
What medical group is Dr. Peter Edwin Darwin part of?
Dr. Darwin is linked to Mid-Atlantic Permanente Medical Group. Dmand AI links Dr. Darwin to 1 more medical group.
Does Dr. Peter Edwin Darwin accept Medicare?
Yes. CMS data shows Dr. Darwin billed Medicare for 488 services in 2024, and Dr. Darwin accepts Medicare assignment.
How many Medicare patients does Dr. Peter Edwin Darwin see?
CMS counts 361 Medicare patients who saw Dr. Darwin in 2024, with an average age of 73.
Is Dr. Peter Edwin Darwin board certified?
Yes. Dr. Darwin is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Peter Edwin Darwin bill to Medicare?
In 2024, Dr. Darwin's most billed Medicare services were diagnostic imaging (74328), surgery: digestive system (43239) and surgery: digestive system (43237).
Show 7 more questionsShow fewer questions
Where did Dr. Peter Edwin Darwin go to medical school?
Dr. Darwin graduated from University of Maryland School of Medicine - Baltimore in 1990.
What drugs does Dr. Peter Edwin Darwin prescribe most?
In 2024 Medicare Part D data, Dr. Darwin's most prescribed drugs by claims were Gavilyte-G, Ursodiol and Pantoprazole Sodium.
Has Dr. Peter Edwin Darwin received payments from drug or device companies?
CMS Open Payments shows $481 in general payments to Dr. Darwin from 11 companies from 2020 to 2025. The largest total came from Ambu Inc.
How long has Dr. Peter Edwin Darwin been practicing?
Dr. Darwin graduated from medical school in 1990, 36 years ago.
Does Dr. Peter Edwin Darwin do research?
Dmand AI links 56 publications to Dr. Darwin, published from 2006 to 2024.
Who does Dr. Peter Edwin Darwin publish with?
Dr. Darwin's most frequent co-authors are Lance T. Uradomo, MD (7 shared papers), Varun Kesar, MD (4 shared papers) and Alexander Michael Lustberg, MD (3 shared papers).
What insurance does Dr. Peter Edwin Darwin accept?
Dr. Darwin is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CareFirst BlueCross BlueShield. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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