Fred Barry Krellenstein, PsyD
- Medicare patients, 2024
- 12
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice locations
- 2
- Practice address
- 8 Holly Dr, Syosset, NY 11791-5718
- Practice phone
- Call (516) 921-3943
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fred Krellenstein
Physician office · Syosset, New York
Find Fred Krellenstein'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.
Fred Barry Krellenstein is a psychologist in Greenvale, New York
Fred Krellenstein practices at Fred Krellenstein in Syosset, New York.
Fred Krellenstein's NPI, 1538258058, was assigned on October 12, 2006. Fred Krellenstein holds New York license 7790.
- NPI
- 1538258058NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749422376
- NPI enumeration date
- October 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (516) 921-3943
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Fred Barry Krellenstein practices in Syosset and Greenvale
Fred Krellenstein's primary practice is Fred Krellenstein, at 8 Holly Dr, Syosset, NY 11791-5718. The practice phone is (516) 921-3943. The NPI Registry lists Fred Krellenstein's practice address as 2200 Northern Blvd, Greenvale, NY 11548.
- Fred KrellensteinPrimary8 Holly Dr, Syosset, NY 11791-5718Phone(516) 921-3943
- NPI Registry address2200 Northern Blvd, Greenvale, NY 11548 · Nassau County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Fred Barry Krellenstein is affiliated with 1 site of care
Fred Krellenstein's primary practice is Fred Krellenstein in Syosset, New York.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Fred Barry Krellenstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Fred Krellenstein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fred Krellenstein | Available with a free account |
Source: Dmand AI Technology Install Data
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Fred Barry Krellenstein is one of 1,198 psychologists in New York
Psychologist is Fred Krellenstein's primary specialty in the NPI Registry, under taxonomy code 103T00000X. Fred Krellenstein is licensed in New York.
Specialties and state licenses
- Psychologist, New YorkPrimary
Psychologists near Fred Krellenstein
Counts of psychologists 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
Fred Barry Krellenstein treated 12 Medicare patients in 2024, average age 73
CMS counts 12 Medicare patients who saw Fred Krellenstein in 2024. The largest group is under 65, with 0 patients. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Fred Krellenstein's median patient age at 57, with 50% women.
Fred Krellenstein's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Fred Krellenstein'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
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Fred Barry Krellenstein offers telehealth to Medicare patients
Fred Krellenstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Fred Krellenstein as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Fred Barry Krellenstein'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 Affiliation DataDmand AI Practice 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) |
| 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 Fred Barry Krellenstein
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Fred Barry Krellenstein's NPI number?
Fred Barry Krellenstein's NPI number is 1538258058. It was assigned on October 12, 2006, and it is active in the NPI Registry.
What does Fred Barry Krellenstein specialize in?
Fred Barry Krellenstein is a psychologist in Greenvale, New York. The primary specialty in the NPI Registry is Psychologist (taxonomy code 103T00000X).
Where does Fred Barry Krellenstein practice?
Fred Krellenstein practices at 8 Holly Dr, Syosset, NY 11791-5718. Fred Krellenstein also practices at 2200 Northern Blvd, Greenvale, NY 11548. Fred Krellenstein's primary practice is Fred Krellenstein in Syosset, New York.
What is Fred Barry Krellenstein's office phone number?
The practice phone on file for Fred Krellenstein is (516) 921-3943.
What is Fred Barry Krellenstein's medical license number?
Fred Krellenstein holds New York license 7790.
Does Fred Barry Krellenstein accept Medicare?
Yes. CMS lists Fred Krellenstein as accepting Medicare assignment.
Does Fred Barry Krellenstein offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Fred Krellenstein as offering telehealth services.
How many Medicare patients does Fred Barry Krellenstein see?
CMS counts 12 Medicare patients who saw Fred Krellenstein in 2024, with an average age of 73.
How long has Fred Barry Krellenstein been practicing?
Fred Krellenstein graduated from medical school in 1983, 43 years ago.
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