Doctor profile · Federal record
Dr. Christopher Ahnallen
Clinical Psychologist · Boston, MA
- NPI 1558429563
- Accepts Medicare
- 20 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1153 Centre St
Boston, MA 021303446
(617) 277-8107
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- July 14, 2016
- Year of graduation
- 2006 — 20 yrs since
- Specialty taxonomy
- 103TC0700X — NUCC code
- State license (1)
- Massachusetts #9013
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558429563. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
158
Distinct HCPCS
1
Medicare allowed
$3,844
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90853 |
Group psychotherapy | 158 | 33 | $24 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 113. This provider delivers 1.4× the peer median.Frequently asked questions
What is Dr. Christopher Ahnallen's medical specialty?
Dr. Christopher Ahnallen practices Clinical Psychologist in Boston, MA.
Where does Dr. Christopher Ahnallen practice?
Dr. Christopher Ahnallen practices at 1153 Centre St, Boston, MA 021303446. Office phone: 6172778107.
What is Dr. Christopher Ahnallen's NPI?
Dr. Christopher Ahnallen's National Provider Identifier (NPI) is 1558429563, issued by NPPES.
Does Dr. Christopher Ahnallen accept Medicare assignment?
Yes. Dr. Christopher Ahnallen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Ahnallen commonly perform?
Top Medicare-reported procedures in 2023: Group psychotherapy (HCPCS 90853). Source: CMS Medicare Physician & Other Practitioners file.