Dr. Cynthia Ran Peng, MD
- Medicare services, 2021
- 63
- Part D claims, 2024
- 234
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $31
- Practice address
- 8008 Westpark Dr, Mclean, VA 22102
- Practice phone
- Call (703) 490-8400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Mid Atlantic States,Inc
Mclean, Virginia
Find Dr. Peng'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. Cynthia Ran Peng is an emergency medicine physician in Mclean, Virginia
Dr. Peng practices at Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia.
Dr. Peng's NPI, 1952789463, was assigned on May 16, 2015. Dr. Peng graduated from University of Maryland School of Medicine - Baltimore in 2015. Dr. Peng's California license number on file is A153848.
- NPI
- 1952789463NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214237528
- NPI enumeration date
- May 16, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 490-8400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cynthia Ran Peng practices at Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia
Dr. Peng's primary practice is Kaiser Foundation Health Plan of the Mid Atlantic States,Inc, at 8008 Westpark Dr, Mclean, VA 22102 in Fairfax County. The practice phone is (703) 490-8400.
- Kaiser Foundation Health Plan of the Mid Atlantic States,Inc8008 Westpark Dr, Mclean, VA 22102 · Fairfax CountyPhone(703) 490-8400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Cynthia Ran Peng is affiliated with 2 sites of care and 3 medical groups
Dr. Peng's primary practice is Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia. Dr. Peng is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is Vituity. Dmand AI also links Dr. Peng to 2 more medical groups, each 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. Cynthia Ran Peng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Peng practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Mid Atlantic States,Inc | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Cynthia Ran Peng is one of 1,686 emergency medicine physicians in Virginia
Emergency medicine is Dr. Peng's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Peng is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Peng's licenses on file in 5 states: California, District of Columbia, Virginia, Maryland and Pennsylvania.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- District of Columbia license
- Virginia license
- Maryland license
- Pennsylvania license
Emergency medicine physicians near Dr. Peng
Counts of emergency medicine physicians 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. Cynthia Ran Peng billed Medicare for 63 services in 2021
CMS data shows 63 Medicare services from Dr. Peng across 3 procedure codes in 2021. Medicare paid $7,195 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Peng's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1302021: 5260%
- Tests and treatments
- 2020: 02021: 11
Dr. Peng compared with the Virginia median for emergency medicine physicians, 2021
- Dr. Peng
- Virginia median
- Medicare services
- 63vs 31180% below
- Part D claims
- 127vs 592.2 times
Medians across 1,632 emergency medicine physicians in Virginia with Dmand AI profiles that report each measure.
Dr. Peng's most billed Medicare procedure codes, 2021
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. Peng?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Peng and other emergency medicine physicians in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Cynthia Ran Peng's patients have a median age of 30
Across all payers, Dmand AI patient panel data puts Dr. Peng's median patient age at 30, with 60% women.
Dr. Peng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 30
Patient panel by sex, all payers
- Women60%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Cynthia Ran Peng wrote 234 Medicare Part D claims in 2024
In 2024, Dr. Peng wrote 234 Medicare Part D claims for 195 patients. 91% of them were for generic drugs. CMS names the drug for 127 of them, across 8 drugs with 11 or more claims each, at $1,313 in total drug cost. In 2023, CMS named 40 claims across 2 drugs.
Dr. Peng's Part D claims by kind of drug, 2024
- Generic214 claims91%
- Brand-name and other20 claims9%
Dr. Peng'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. Peng's Part D claims, 2024
- Opioids6%15 of 234 claims
- Antibiotics43%100 of 234 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: 402024: 127217%
Drugs named by CMS: 8 in 2024, 2 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. Cynthia Ran Peng takes part in Medicare
Dr. Peng accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Cynthia Ran Peng has 2 publications on record
Dmand AI links 2 papers to Dr. Peng, published from 2019 to 2021. Dr. Peng's most frequent co-authors are Marc Auerbach, MD, Francesca Maria Bullaro, MD and Holly Ann Caretta-Weyer, MD.
Dr. Peng's most frequent co-authors
- Marc Auerbach, MD1 shared paper
- Francesca Maria Bullaro, MD1 shared paper
- Holly Ann Caretta-Weyer, MD1 shared paper
Recent publications by Dr. Peng
See who Dr. Peng researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Peng works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Cynthia Ran Peng received $31 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Peng from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Lundbeck LLC paid the most, $31.
Companies that paid Dr. Peng the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Cynthia Ran Peng graduated from University of Maryland School of Medicine - Baltimore
Dr. Peng graduated from University of Maryland School of Medicine - Baltimore in 2015.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Cynthia Ran Peng accepts plans from 3 insurance carriers
Dr. Peng is in network with 3 carriers, including United Healthcare, CMS Medicare and DentaQuest. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- CMS Medicare
- DentaQuest
Plan types Dr. Peng accepts, by number of carriers
- Medicare2
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Cynthia Ran Peng'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 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 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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Cynthia Ran Peng
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. Cynthia Ran Peng's NPI number?
Dr. Cynthia Ran Peng's NPI number is 1952789463. It was assigned on May 16, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Cynthia Ran Peng?
Dr. Cynthia Ran Peng is an emergency medicine physician in Mclean, Virginia. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Cynthia Ran Peng practice?
Dr. Peng practices at 8008 Westpark Dr, Mclean, VA 22102. Dr. Peng's primary practice is Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia. Dmand AI also links Dr. Peng to 2 medical groups.
What is Dr. Cynthia Ran Peng's office phone number?
The practice phone on file for Dr. Peng is (703) 490-8400.
What is Dr. Cynthia Ran Peng's medical license number?
Dr. Peng's California license number on file is A153848, one of the licenses on file in 5 states.
Which states has Dr. Cynthia Ran Peng been licensed in?
Dmand AI has state licenses on file for Dr. Peng in California (2018 to 2025), District of Columbia (2022 to 2026), Virginia (2022 to 2026), Maryland (2022 to 2025) and Pennsylvania (2015 to 2018).
Which hospitals is Dr. Cynthia Ran Peng affiliated with?
Dr. Peng is affiliated with Stanford Hospital at 300 Pasteur Drive.
What medical group is Dr. Cynthia Ran Peng part of?
Dr. Peng is linked to Vituity. Dmand AI links Dr. Peng to 2 more medical groups.
Does Dr. Cynthia Ran Peng accept Medicare?
Yes. CMS data shows Dr. Peng billed Medicare for 63 services in 2021, and Dr. Peng accepts Medicare assignment.
Is Dr. Cynthia Ran Peng board certified?
Yes. Dr. Peng is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Cynthia Ran Peng bill to Medicare?
In 2021, Dr. Peng's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93010).
Where did Dr. Cynthia Ran Peng go to medical school?
Dr. Peng graduated from University of Maryland School of Medicine - Baltimore in 2015.
What drugs does Dr. Cynthia Ran Peng prescribe most?
In 2024 Medicare Part D data, Dr. Peng's most prescribed drugs by claims were Nitrofurantoin Mono-Macro, Amoxicillin-Clavulanate Potass and Cefdinir.
Has Dr. Cynthia Ran Peng received payments from drug or device companies?
CMS Open Payments shows $31 in general payments to Dr. Peng from 1 company from 2025 to 2025. The largest total came from Lundbeck LLC.
How long has Dr. Cynthia Ran Peng been practicing?
Dr. Peng graduated from medical school in 2015, 11 years ago.
Does Dr. Cynthia Ran Peng do research?
Dmand AI links 2 publications to Dr. Peng, published from 2019 to 2021.
Who does Dr. Cynthia Ran Peng publish with?
Dr. Peng's most frequent co-authors are Marc Auerbach, MD (1 shared paper), Francesca Maria Bullaro, MD (1 shared paper) and Holly Ann Caretta-Weyer, MD (1 shared paper).
What insurance does Dr. Cynthia Ran Peng accept?
Dr. Peng is in network with 3 carriers, including United Healthcare, CMS Medicare and DentaQuest. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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