Provider Profile
Ronald J. Dahl, PhD is a psychologist — clinical practicing in Lavale, MD. Ronald is also listed as specializing in psychologist. According to Medicare claims data, the services billed most often include psychotherapy, 1 hour.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
932 NATIONAL HWY STE 4
Lavale, MD 21502
947 Wayne Ave # 217
Chambersburg, PA 17201
431 N George St
Millersville, PA 17551
Within Clinical Psychology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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133 services · 14 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 1 hour | Treatment | 90837 |
133 | Less often than most peers in Psychologist — Clinical |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Dahl is a psychologist in Lavale, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychologist — Clinical”.
NPI registry
Dr. Dahl is listed at 932 National Hwy Ste 4, Lavale, MD 21502. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (717) 808-8400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Dahl's National Provider Identifier is 1922434455. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Dahl attended Other, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
Dr. Dahl has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Dahl provides treatments such as psychotherapy, 1 hour. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Dahl. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.