Viken Matossian, M.D.
NPI 1598896367 · Child & Adolescent Psychiatry Physician · Howell, MI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Viken Matossian, M.D. is a Child & Adolescent Psychiatry Physician provider in Howell, MI (NPI 1598896367).
Provider details
- NPI number
- 1598896367
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301061979 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,089 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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, 1 Hour90837 | 538 | $140 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 392 | $107 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 94 | $67 |
| Psychiatric Diagnostic Evaluation90791 | 25 | $162 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 20 | $185 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 20 | $69 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 55 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bupropion Hclbrand: Bupropion Xl | 264 | 62 |
| Quetiapine Fumarate | 234 | 47 |
| Duloxetine Hcl | 233 | 56 |
| Lamotrigine | 180 | 44 |
| Clonazepam | 142 | 26 |
| Methylphenidate Hcl | 141 | 23 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,006 across 76 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-07
- Last updated
- 2015-04-14
Frequently asked questions
- What is Viken Matossian's NPI number?
- Viken Matossian's National Provider Identifier (NPI) is 1598896367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viken Matossian's specialty?
- Viken Matossian is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Viken Matossian located?
- Viken Matossian's practice location on file with NPPES is 2901 E Grand River Ave, Howell, MI 48843-8548.
- What is Viken Matossian's phone number?
- The practice phone number listed in the NPPES registry for Viken Matossian is (517) 548-1537.
- Does Viken Matossian accept Medicare?
- Viken Matossian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Viken Matossian's NPI active?
- Yes — Viken Matossian's NPI (1598896367) is active in the NPPES registry as of the last update on 2015-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.