Tatum Siebert, M.ED
NPI 1528389566 · Clinical Psychologist · Boston, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tatum Siebert, M.ED is a Clinical Psychologist provider in Boston, MA (NPI 1528389566).
Provider details
- NPI number
- 1528389566
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- M.ED
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,381 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy, 30 Minutes90832 | 1,168 | $79 |
| Psychiatric Diagnostic Evaluation90791 | 183 | $173 |
| Exam of Neurobehavioral Status, First Hour96116 | 16 | $94 |
| Exam of Neurobehavioral Status, Each Additional Hour96121 | 14 | $76 |
Typical Medicare-allowed amounts for these services range $76–$173 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 103 Myron StreetWest Springfield, MA 01089-3878Phone: (413) 592-1980Fax: (413) 439-0096
Registry dates
- Enumerated
- 2010-06-14
- Last updated
- 2024-08-19
- Certified
- 2024-08-19
Frequently asked questions
- What is Tatum Siebert's NPI number?
- Tatum Siebert's National Provider Identifier (NPI) is 1528389566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tatum Siebert's specialty?
- Tatum Siebert is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Tatum Siebert located?
- Tatum Siebert's practice location on file with NPPES is 84 State St, Boston, MA 02109-2202.
- What is Tatum Siebert's phone number?
- The practice phone number listed in the NPPES registry for Tatum Siebert is (860) 788-6404.
- Does Tatum Siebert accept Medicare?
- Tatum Siebert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tatum Siebert's NPI active?
- Yes — Tatum Siebert's NPI (1528389566) is active in the NPPES registry as of the last update on 2024-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.