Christyn Sieve, PSY, D.
Psychologist · Portsmouth, NH
Christyn Sieve, PSY, D. is a psychologist with a practice address in Portsmouth, New Hampshire, and NPI 1578607743, issued on Feb 19, 2007. Check the license (New Hampshire NH964, as entered in NPPES) with the New Hampshire board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Christyn Sieve
- Credential
- PSY, D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- NH964 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1 Cate St, Portsmouth, NH 03801
- Phone
- (603) 433-2626
- Enumerated
- Feb 19, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (603) 433-2736
- Medicare enrollment
- Enrolled (PECOS I20140707000017); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 251 in New Hampshire → Look up another NPI →
Also registered at 1 Cate St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Begnoche, PTPhysical Therapist1992742001
- David Burchuk, P.T.Physical Therapist1417048596
- Richard Carr, LCMHCMental Health Counselor1629112891
- Deidre Emerson, LMFTMarriage & Family Therapist1699819862
- Catherine Lamond, PSY, D.Psychologist1952445132
- Thomas McCormack, LICSWSocial Worker1134263304
Verify Christyn Sieve in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license NH964Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Christyn Sieve among 251 psychologist records in New Hampshire
Christyn Sieve, PSY, D. is one of 251 psychologist records with a practice address in New Hampshire. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileNo · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 28% of these records are
- Graduated1999 · median 2000 among the 70 with a school on file
- Record last updated2007 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 psychologist records list a practice address in Portsmouth
They are 22 of the 1,860 NPPES records with a practice address in Portsmouth, and 251 psychologist records in New Hampshire. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 251 in New Hampshire → Every provider in Portsmouth → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Laura Connor, ED DPortsmouth, NH 038011467479360
- Margaret Dawson, ED.DPortsmouth, NH 038011366516890
- Richard Guare, PHDPortsmouth, NH 038011811062201
- Cynthia Keenan, PH.D. L.C.M.H.C.Portsmouth, NH 038011497847156
- Chet Lesniak, PH.D.Portsmouth, NH 038011164575064
- Mary McCrae, PH.DPortsmouth, NH 038011609943893
- Mark Moses, PH.DPortsmouth, NH 038011881612117
- Karen Pearson, ED.D.Portsmouth, NH 038011891860706
Common questions
What is Christyn Sieve, PSY, D.'s NPI number?
Christyn Sieve, PSY, D.'s National Provider Identifier (NPI) is 1578607743, issued on Feb 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Christyn Sieve, PSY, D. located?
The NPPES record lists a practice address at 1 Cate St, Portsmouth, NH, 03801. Phone: (603) 433-2626. Providers update this record themselves, so call before visiting.
How can I verify Christyn Sieve, PSY, D.'s license?
NPPES lists New Hampshire license number NH964, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.