Physician Profile
Unclaimed ProfileAbout CALLAHAN
Based in Chestertown, MD, Patrick E Callahan, MD is listed in the NPI registry under anesthesiology. Patrick graduated from Eastern Virginia Medical School in 1991. Patrick is also listed as specialising in pain medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Callahan's specialty?
Dr. Callahan is an anesthesiology in Chestertown, MD. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ANESTHESIOLOGY”.
NPI registry
Where can I find Dr. Callahan?
Dr. Callahan is listed at 100 BROWN ST CHESTER RIVER HOSPITAL CENTER, Chestertown, MD 21620. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Callahan?
The number on file is (410) 778-3300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Callahan's NPI number?
Dr. Callahan's National Provider Identifier is 1447218060. 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
What is Dr. Callahan's medical education?
Dr. Callahan attended Eastern Virginia Medical School, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Callahan been practising?
Dr. Callahan has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Callahan known for?
According to Medicare billing data, Dr. Callahan performs procedures including destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint, injection of substance into lower spine canal using imaging guidance and destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Callahan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Callahan. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (410) 778-3300
- Email not available
Practice Locations
100 BROWN ST CHESTER RIVER HOSPITAL CENTER
Chestertown, MD 21620
Procedures Most Often Billed to Medicare
3,977 services · 1,419 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint | Procedure | 64636 |
192 |
| Injection of substance into lower spine canal using imaging guidance | Procedure | 62323 |
191 |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint | Procedure | 64635 |
183 |
| Injection of lower or sacral spine facet joint using imaging guidance, second level | Procedure | 64494 |
124 |
| Injection of lower or sacral spine facet joint using imaging guidance, single level | Procedure | 64493 |
124 |
| Injection of upper or middle spine facet joint using imaging guidance, second level | Procedure | 64491 |
86 |
| Injection of upper or middle spine facet joint using imaging guidance, single level | Procedure | 64490 |
86 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
1,438 |
| Chronic pain management and treatment, monthly bundle including, diagnosis; assessment and monitoring; administration of a validated pain rating scale or tool; the development, implementation, revision, and/or maintenance of a person-centered care plan th | Billing code | G3002 |
1,356 |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
76 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Eastern Virginia Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1991 at Eastern Virginia Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint 8
Providers in MD who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.