John R. Greensfelder, DC
- Medicare patients, 2024
- 78
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 2622 Annapolis Rd, Severn, MD 21144
- Practice phone
- Call (410) 674-8605
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Odenton Chiropract
Chiropractic practice · Severn, Maryland
Find John Greensfelder'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.
John R. Greensfelder is a chiropractor in Severn, Maryland
John Greensfelder practices at Odenton Chiropract in Severn, Maryland.
John Greensfelder's NPI, 1871637207, was assigned on February 18, 2007. John Greensfelder graduated from Los Angeles College of Chiropractic in 1996. John Greensfelder holds Maryland license S01820.
- NPI
- 1871637207NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456370519
- NPI enumeration date
- February 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 674-8605
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John R. Greensfelder practices at Odenton Chiropract in Severn, Maryland
John Greensfelder's primary practice is Odenton Chiropract, at 2622 Annapolis Rd, Severn, MD 21144. The practice phone is (410) 674-8605.
- Odenton Chiropract2622 Annapolis Rd, Severn, MD 21144Phone(410) 674-8605
Source: Dmand AI Affiliation Data
John R. Greensfelder is affiliated with 1 site of care and 1 medical group
John Greensfelder's primary practice is Odenton Chiropract in Severn, Maryland. Dmand AI also links John Greensfelder to 1 medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John R. Greensfelder's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Greensfelder practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Odenton Chiropract | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John R. Greensfelder is one of 525 chiropractors in Maryland
Chiropractor is John Greensfelder's primary specialty in the NPI Registry, under taxonomy code 111N00000X. John Greensfelder is licensed in Maryland.
Specialties and state licenses
- Chiropractor, MarylandPrimary
Chiropractors near John Greensfelder
Counts of chiropractors 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
John R. Greensfelder treated 78 Medicare patients in 2024, average age 73
CMS counts 78 Medicare patients who saw John Greensfelder in 2024. The largest group is 65 to 74, with 45 patients. 73% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.73, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Greensfelder's median patient age at 59, with 54% women.
John Greensfelder's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Greensfelder's Medicare patients by sex, 2024
- Women4862%
- Men3038%
Chronic conditions among John Greensfelder's Medicare patients, 2024
- High cholesterol73%
- High blood pressure60%
- Arthritis45%
- Ischemic heart disease23%
- Diabetes22%
- Anxiety14%
- Mood disorders14%
- Osteoporosis14%
Share of Medicare patients with each condition. A patient can have several.
John Greensfelder's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How John R. Greensfelder takes part in Medicare
John Greensfelder 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)
John R. Greensfelder graduated from Los Angeles College of Chiropractic
John Greensfelder graduated from Los Angeles College of Chiropractic in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John R. Greensfelder'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| 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) |
| 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 John R. Greensfelder
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What is John R. Greensfelder's NPI number?
John R. Greensfelder's NPI number is 1871637207. It was assigned on February 18, 2007, and it is active in the NPI Registry.
What does John R. Greensfelder specialize in?
John R. Greensfelder is a chiropractor in Severn, Maryland. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does John R. Greensfelder practice?
John Greensfelder practices at 2622 Annapolis Rd, Severn, MD 21144. John Greensfelder's primary practice is Odenton Chiropract in Severn, Maryland. Dmand AI also links John Greensfelder to 1 medical group.
What is John R. Greensfelder's office phone number?
The practice phone on file for John Greensfelder is (410) 674-8605.
What is John R. Greensfelder's medical license number?
John Greensfelder holds Maryland license S01820.
Does John R. Greensfelder accept Medicare?
Yes. CMS lists John Greensfelder as accepting Medicare assignment.
How many Medicare patients does John R. Greensfelder see?
CMS counts 78 Medicare patients who saw John Greensfelder in 2024, with an average age of 73.
Where did John R. Greensfelder go to medical school?
John Greensfelder graduated from Los Angeles College of Chiropractic in 1996.
How long has John R. Greensfelder been practicing?
John Greensfelder graduated from medical school in 1996, 30 years ago.
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