Ellen C. Ottenstein
- Medicare patients, 2024
- 12
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2015
- Practice address
- 15701 Crabbs Branch Way, Derwood, MD 20855
- Practice phone
- Call (301) 251-8965
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Willow Oak Therapy Center, Inc.
Derwood, Maryland
Find Ellen Ottenstein'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.
Ellen C. Ottenstein is a clinical social worker in Derwood, Maryland
Ellen Ottenstein practices at Willow Oak Therapy Center, Inc. in Derwood, Maryland.
Ellen Ottenstein's NPI, 1760847693, was assigned on December 18, 2015. Ellen Ottenstein holds Maryland license 18014.
- NPI
- 1760847693NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810287034
- NPI enumeration date
- December 18, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (301) 251-8965
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Ellen C. Ottenstein practices at Willow Oak Therapy Center, Inc. in Derwood, Maryland
Ellen Ottenstein's primary practice is Willow Oak Therapy Center, Inc., at 15701 Crabbs Branch Way, Derwood, MD 20855 in Montgomery County. The practice phone is (301) 251-8965.
- Willow Oak Therapy Center, Inc.15701 Crabbs Branch Way, Derwood, MD 20855 · Montgomery CountyPhone(301) 251-8965
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Ellen C. Ottenstein is affiliated with 2 sites of care and 1 medical group
Ellen Ottenstein's primary practice is Willow Oak Therapy Center, Inc. in Derwood, Maryland. The medical group on file is Willow Oak Therapy Center. Dmand AI also links Ellen Ottenstein to 1 more group practice or clinic, 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 Ellen C. Ottenstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ellen Ottenstein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Willow Oak Therapy Center, Inc. | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Ellen C. Ottenstein is one of 2,537 clinical social workers in Maryland
Social worker is Ellen Ottenstein's primary specialty in the NPI Registry, under taxonomy code 1041C0700X. The record also lists clinical. Ellen Ottenstein is licensed in Maryland.
Specialties and state licenses
- Clinical social worker, MarylandPrimary
Clinical social workers near Ellen Ottenstein
Counts of clinical social workers 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
Ellen C. Ottenstein treated 12 Medicare patients in 2024, average age 74
CMS counts 12 Medicare patients who saw Ellen Ottenstein in 2024. 75% of them have anxiety. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ellen Ottenstein's median patient age at 45, with 75% women.
Chronic conditions among Ellen Ottenstein's Medicare patients, 2024
- Anxiety75%
Share of Medicare patients with each condition. A patient can have several.
Ellen Ottenstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women75%
- Men25%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ellen C. Ottenstein offers telehealth to Medicare patients
Ellen Ottenstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Ellen Ottenstein as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Ellen C. Ottenstein'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 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) |
| 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 Ellen C. Ottenstein
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ellen C. Ottenstein's NPI number?
Ellen C. Ottenstein's NPI number is 1760847693. It was assigned on December 18, 2015, and it is active in the NPI Registry.
What does Ellen C. Ottenstein specialize in?
Ellen C. Ottenstein is a clinical social worker in Derwood, Maryland. The primary specialty in the NPI Registry is Clinical Social Worker (taxonomy code 1041C0700X).
Where does Ellen C. Ottenstein practice?
Ellen Ottenstein practices at 15701 Crabbs Branch Way, Derwood, MD 20855. Ellen Ottenstein's primary practice is Willow Oak Therapy Center, Inc. in Derwood, Maryland. Dmand AI also links Ellen Ottenstein to 1 group practice or clinic.
What is Ellen C. Ottenstein's office phone number?
The practice phone on file for Ellen Ottenstein is (301) 251-8965.
What is Ellen C. Ottenstein's medical license number?
Ellen Ottenstein holds Maryland license 18014.
What medical group is Ellen C. Ottenstein part of?
Ellen Ottenstein is linked to Willow Oak Therapy Center.
Does Ellen C. Ottenstein accept Medicare?
Yes. CMS lists Ellen Ottenstein as accepting Medicare assignment.
Does Ellen C. Ottenstein offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Ellen Ottenstein as offering telehealth services.
How many Medicare patients does Ellen C. Ottenstein see?
CMS counts 12 Medicare patients who saw Ellen Ottenstein in 2024, with an average age of 74.
How long has Ellen C. Ottenstein been practicing?
Ellen Ottenstein graduated from medical school in 2012, 14 years ago.
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