Dr. Mary Elizabeth Warfield, MD
- Medicare services, 2019
- 43
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 803 Russell Ave, Gaithersburg, MD 20879-3584
- Practice phone
- Call (301) 869-0700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Occupational Health Centers Of The Southwest
Primary care practice · Gaithersburg, Maryland
Find Dr. Warfield'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. Mary Elizabeth Warfield is an internist in Gaithersburg, Maryland
Dr. Warfield practices at Occupational Health Centers Of The Southwest in Gaithersburg, Maryland.
Dr. Warfield's NPI, 1154518439, was assigned on October 1, 2007. Dr. Warfield holds District of Columbia license 14200.
- NPI
- 1154518439NPI Registry (opens in a new tab)
- NPI enumeration date
- October 1, 2007
- NPI status
- Active
- Practice phone
- (301) 869-0700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Elizabeth Warfield practices at Occupational Health Centers of the Southwest in Gaithersburg, Maryland
Dr. Warfield's primary practice is Occupational Health Centers of the Southwest, at 803 Russell Ave, Gaithersburg, MD 20879-3584. The practice phone is (301) 869-0700.
- Occupational Health Centers of the Southwest803 Russell Ave, Gaithersburg, MD 20879-3584Phone(301) 869-0700
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Elizabeth Warfield is affiliated with 1 site of care and 2 medical groups
Dr. Warfield's primary practice is Occupational Health Centers Of The Southwest in Gaithersburg, Maryland. Dmand AI also links Dr. Warfield to 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Mary Elizabeth Warfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warfield practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Occupational Health Centers Of The Southwest | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Elizabeth Warfield is one of 3,320 internists in Maryland
Internal medicine is Dr. Warfield's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Warfield is licensed in District of Columbia.
Specialties and state licenses
- Internal medicine, District of ColumbiaPrimary
Internists near Dr. Warfield
Counts of internists 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. Mary Elizabeth Warfield billed Medicare for 43 services in 2019
CMS data shows 43 Medicare services from Dr. Warfield across 3 procedure codes in 2019. Medicare paid $3,192 for them. Every service was in an office.
Dr. Warfield's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 442019: 3032%
- Lab and pathology
- 2018: 392019: 1367%
Dr. Warfield compared with the Maryland median for internists, 2019
- Dr. Warfield
- Maryland median
- Medicare services
- 43vs 65693% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Warfield's most billed Medicare procedure codes, 2019
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. Warfield?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Warfield and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Elizabeth Warfield's patients have a median age of 54
Across all payers, Dmand AI patient panel data puts Dr. Warfield's median patient age at 54, with 55% women.
Dr. Warfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Mary Elizabeth Warfield'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| 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. Mary Elizabeth Warfield
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. Mary Elizabeth Warfield's NPI number?
Dr. Mary Elizabeth Warfield's NPI number is 1154518439. It was assigned on October 1, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Elizabeth Warfield?
Dr. Mary Elizabeth Warfield is an internist in Gaithersburg, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Elizabeth Warfield practice?
Dr. Warfield practices at 803 Russell Ave, Gaithersburg, MD 20879-3584. Dr. Warfield's primary practice is Occupational Health Centers Of The Southwest in Gaithersburg, Maryland. Dmand AI also links Dr. Warfield to 2 medical groups.
What is Dr. Mary Elizabeth Warfield's office phone number?
The practice phone on file for Dr. Warfield is (301) 869-0700.
What is Dr. Mary Elizabeth Warfield's medical license number?
Dr. Warfield holds District of Columbia license 14200.
Does Dr. Mary Elizabeth Warfield accept Medicare?
Yes. CMS data shows Dr. Warfield billed Medicare for 43 services in 2019.
What services does Dr. Mary Elizabeth Warfield bill to Medicare?
In 2019, Dr. Warfield's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and lab and pathology test (87880).
How long has Dr. Mary Elizabeth Warfield been practicing?
Dr. Warfield's NPI was assigned in 2007.
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