Christopher G. Ahnallen
Clinical Psychologist · Boston, MA
Christopher G. Ahnallen is a clinical psychologist with a practice address in Boston, Massachusetts, and NPI 1558429563, issued on Dec 4, 2006. Check the license (Massachusetts 9013, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christopher G. Ahnallen
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 9013 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1153 Centre St, Boston, MA 02130
- Phone
- (617) 277-8107
- Enumerated
- Dec 4, 2006
- Record last updated
- Jul 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110404000689); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 3,185 in Massachusetts → Look up another NPI →
Also registered at 1153 Centre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christopher G. Ahnallen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 9013Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Brigham And Womens Physicians Organization IncJamaica Plain, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher G. Ahnallen among 3,185 clinical psychologist records in Massachusetts
Christopher G. Ahnallen is one of 3,185 clinical psychologist records with a practice address in Massachusetts. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 70% newer
- In a Medicare fileYes · 12% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Graduated2006 · median 2000 among the 777 with a school on file
- Record last updated2016 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
509 clinical psychologist records list a practice address in Boston
They are 509 of the 41,865 NPPES records with a practice address in Boston, and 3,185 clinical psychologist records in Massachusetts.
All 3,185 in Massachusetts → Every provider in Boston → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Deborah Block, PH.D.Jamaica Plain, MA 021301609898097
- Deborah Brief, PH.D.Boston, MA 021301568575553
- Barbara Cooper, PH.D.Boston, MA 021301720063084
- Lisa Fisher, PH.D.Boston, MA 021301316956188
- Barbara Kamholz, PH.D.Jamaica Plain, MA 021301245333566
- Terence Keane, PH.D.Boston, MA 021301205854973
- Stephen Lancey, PH.D.Boston, MA 021301912014853
- Martin Laroche, PHDJamaica Plain, MA 021301386653558
Common questions
What is Christopher G. Ahnallen's NPI number?
Christopher G. Ahnallen's National Provider Identifier (NPI) is 1558429563, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher G. Ahnallen located?
The NPPES record lists a practice address at 1153 Centre St, Boston, MA, 02130. Phone: (617) 277-8107. Providers update this record themselves, so call before visiting.
How can I verify Christopher G. Ahnallen's license?
NPPES lists Massachusetts license number 9013, as entered by the provider. Search the Massachusetts 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. Medicare files from data.cms.gov. 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.