Dr. Darryl Atwell, MD
- Medicare services, 2024
- 35
- Medicare patients, 2024
- 104
- Hospital affiliations
- 2
- Industry payments
- $442
- Medical groups
- 4
- Practice address
- 9901 Medical Center Dr, Rockville, MD 20850
- Practice phone
- Call (443) 276-7624
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
First Colonies Anesthesia Associates
Rockville, Maryland
Find Dr. Atwell'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. Darryl Atwell is an anesthesiologist in Rockville, Maryland
Dr. Atwell practices at First Colonies Anesthesia Associates in Rockville, Maryland.
Dr. Atwell's NPI, 1598706376, was assigned on June 10, 2006. Dr. Atwell graduated from Howard University College of Medicine in 1991. Dr. Atwell holds Maryland license D0063633.
- NPI
- 1598706376NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032137625
- NPI enumeration date
- June 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (443) 276-7624
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Darryl Atwell practices at First Colonies Anesthesia Associates in Rockville, Maryland
Dr. Atwell's primary practice is First Colonies Anesthesia Associates, at 9901 Medical Center Dr, Rockville, MD 20850 in Montgomery County. The practice phone is (443) 276-7624.
- First Colonies Anesthesia Associates9901 Medical Center Dr, Rockville, MD 20850 · Montgomery CountyPhone(443) 276-7624
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Darryl Atwell is affiliated with 6 sites of care and 4 medical groups
Dr. Atwell's primary practice is First Colonies Anesthesia Associates in Rockville, Maryland. Dr. Atwell is also affiliated with Adventist HealthCare Shady Grove Medical Center. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Atwell to 1 more hospital, 3 group practices and clinics and 3 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. Darryl Atwell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Atwell practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| First Colonies Anesthesia Associates | Available with a free account |
| +5 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Darryl Atwell is one of 965 anesthesiologists in Maryland
Anesthesiology is Dr. Atwell's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Atwell is licensed in Maryland.
Specialties and state licenses
- Anesthesiology, MarylandPrimary
Anesthesiologists near Dr. Atwell
Counts of anesthesiologists 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. Darryl Atwell billed Medicare for 35 services in 2024
CMS data shows 35 Medicare services from Dr. Atwell across 2 procedure codes in 2024, for 104 Medicare patients. Medicare paid $7,684 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Atwell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 112024: 22100%
- Surgery
- 2023: 02024: 13
Dr. Atwell compared with the Maryland median for anesthesiologists, 2024
- Dr. Atwell
- Maryland median
- Medicare services
- 35vs 10165% below
- Medicare patients
- 104vs 17641% below
Medians across 918 anesthesiologists in Maryland with Dmand AI profiles that report each measure.
Dr. Atwell'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. Atwell?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Atwell and other anesthesiologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Darryl Atwell treated 104 Medicare patients in 2024, average age 73
CMS counts 104 Medicare patients who saw Dr. Atwell in 2024. The largest group is 65 to 74, with 45 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.18, 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. Atwell's median patient age at 57, with 51% women.
Dr. Atwell's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Atwell's Medicare patients by sex, 2024
- Women4947%
- Men5553%
Chronic conditions among Dr. Atwell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes54%
- Arthritis45%
- Chronic kidney disease43%
- Atrial fibrillation36%
- Ischemic heart disease33%
- Heart failure32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Atwell'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
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Darryl Atwell takes part in Medicare
Dr. Atwell 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. Darryl Atwell received $442 in industry payments from 2016 to 2025
CMS Open Payments shows 11 general payments to Dr. Atwell from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $222.
General payments to Dr. Atwell by program year, 2016 to 2025
Companies that paid Dr. Atwell the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Darryl Atwell graduated from Howard University College of Medicine
Dr. Atwell graduated from Howard University College of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Darryl Atwell'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 DataMedicare Physician & Other Practitioners - 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Darryl Atwell
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. Darryl Atwell's NPI number?
Dr. Darryl Atwell's NPI number is 1598706376. It was assigned on June 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Darryl Atwell?
Dr. Darryl Atwell is an anesthesiologist in Rockville, Maryland. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Darryl Atwell practice?
Dr. Atwell practices at 9901 Medical Center Dr, Rockville, MD 20850. Dr. Atwell's primary practice is First Colonies Anesthesia Associates in Rockville, Maryland. Dmand AI also links Dr. Atwell to 1 hospital, 3 group practices and clinics and 3 medical groups.
What is Dr. Darryl Atwell's office phone number?
The practice phone on file for Dr. Atwell is (443) 276-7624.
What is Dr. Darryl Atwell's medical license number?
Dr. Atwell holds Maryland license D0063633.
Which hospitals is Dr. Darryl Atwell affiliated with?
Dr. Atwell is affiliated with Adventist HealthCare Shady Grove Medical Center. Dmand AI links Dr. Atwell to 1 more hospital.
What medical group is Dr. Darryl Atwell part of?
Dr. Atwell is linked to Johns Hopkins University. Dmand AI links Dr. Atwell to 3 more medical groups.
Does Dr. Darryl Atwell accept Medicare?
Yes. CMS data shows Dr. Atwell billed Medicare for 35 services in 2024, and Dr. Atwell accepts Medicare assignment.
How many Medicare patients does Dr. Darryl Atwell see?
CMS counts 104 Medicare patients who saw Dr. Atwell in 2024, with an average age of 73.
What services does Dr. Darryl Atwell bill to Medicare?
In 2024, Dr. Atwell's most billed Medicare services were anesthesia (00537) and surgery: heart and blood vessels (36620).
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Where did Dr. Darryl Atwell go to medical school?
Dr. Atwell graduated from Howard University College of Medicine in 1991.
Has Dr. Darryl Atwell received payments from drug or device companies?
CMS Open Payments shows $442 in general payments to Dr. Atwell from 7 companies from 2016 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Darryl Atwell been practicing?
Dr. Atwell graduated from medical school in 1991, 35 years ago.
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