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- 100 Brown St, Chester River Hospital Center, Chestertown, MD 21620
About Dr. 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 specializing in pain medicine. According to Medicare claims data, Patrick cared for 1,419 Medicare patients across 3,977 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, 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, and destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint. NPI 1447218060 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (410) 778-3300
- Email not available
Practice Locations
100 BROWN ST CHESTER RIVER HOSPITAL CENTER
Chestertown, MD 21620
Conditions Commonly Evaluated or Treated
Within Anesthesiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Anesthesia complications
- Anesthesia Allergy or Reaction
- Fear of Waking Up During Surgery
Back & spine
- Arthritis of the spine
- Degenerative disc disease
- Failed back surgery syndrome
- Herniated disc
- Lower back pain
- Neck pain
- Sacroiliac joint pain
- Spinal compression fracture
- Spinal stenosis
- Spondylolisthesis
- Tailbone pain
- Upper Back Pain
Chronic pain
- Chest Wall Pain After Surgery
Facial & jaw pain
- Temporomandibular joint disorder
- Throat nerve pain
General pain
- Cancer pain
- Chronic pain
- Fibromyalgia
- Severe post-op pain
Head & facial pain
- Chronic migraines
- Occipital neuralgia
- Spinal headache
- Trigeminal neuralgia
Headaches
- Cluster Headaches
Joint pain
- Hip Replacement Pain
- Knee pain
- Lateral hip pain and trochanteric bursitis
- Shoulder Pain
Mental health
- Trauma
- Treatment-resistant depression
Muscle pain
- Muscle knots and spasms
Musculoskeletal pain
- Rib pain
Nerve pain
- Abdominal wall nerve pain
- Complex Regional Pain Syndrome
- Foot Numbness and Tingling
- Groin nerve pain after hernia surgery
- Nerve damage after surgery
- Neuropathy
- Outer thigh burning and numbness
- Phantom limb pain
- Pinched nerve
- Piriformis syndrome
- Sciatica
- Shingles pain
- Tarsal Tunnel Syndrome
Pelvic pain
- Chronic pelvic pain
- Pudendal nerve pain
Post-surgery recovery
- Hoarseness and throat pain after surgery
- Nausea After Surgery
Sedation & anesthesia
- Anesthesia anxiety
- History of anesthesia complications
Spine pain
- Torn spinal disc
- Whiplash neck injury
Procedures & services
Ablation
- Hip radiofrequency ablation
Head & facial procedures
- Botox for chronic migraines
- Facial nerve block for headache
- Occipital nerve block
Implants & devices
- Pain pump implant
- Pain pump refill and check
- Peripheral nerve stimulator implant
- Spinal cord stimulator implant
- Spinal cord stimulator trial
Infusion therapies
- Ketamine infusion therapy
Infusion therapy
- Lidocaine Infusion for Chronic Pain
Joint injections
- Joint injection or aspiration
- Ultrasound-guided hip injection
Muscle injections
- Trigger-point injection
Nerve blocks
- Abdominal Nerve Block
- Celiac Plexus Nerve Block
- Ganglion impar block
- Groin nerve block
- Pudendal nerve block
- Superior hypogastric plexus block
Nerve injections
- Celiac plexus block
- Lumbar sympathetic block
- Nerve block
- Rib nerve block
- Shoulder nerve block
- Stellate ganglion block
Nerve procedures
- Knee nerve block and ablation
- Peripheral nerve hydrodissection
- Radiofrequency ablation
Pain relief procedures
- Cryoneurolysis
Regional anesthesia
- Adductor canal block
- Brachial plexus block
- Popliteal nerve block
Sedation
- IV sedation for endoscopy
Sedation & anesthesia
- General anesthesia
- Labor epidural
- Moderate dental sedation
- Pre-surgery anesthesia consult
- Sedation for dental work
- Spinal spinal block
Spine injections
- Epidural steroid injection
- Facet joint injection
- Medial branch block
- Sacroiliac joint injection
- Tailbone epidural injection
Spine procedures
- Blood patch for spinal headache
- Epidural Lysis Of Adhesions
- Interspinous Spacer
- Kyphoplasty
- Mild procedure for spinal stenosis
- Percutaneous disc decompression
- Spinal bone nerve ablation
- Vertebroplasty
Procedures Most Often Billed to Medicare
3,977 services · 1,419 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint | Procedure | 64636 |
192 | More than most peers in Anesthesiology |
| Injection of substance into lower spine canal using imaging guidance | Procedure | 62323 |
191 | More than most peers in Anesthesiology |
| Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint | Procedure | 64635 |
183 | More than most peers in Anesthesiology |
| Injection of lower or sacral spine facet joint using imaging guidance, second level | Procedure | 64494 |
124 | More than most peers in Anesthesiology |
| Injection of lower or sacral spine facet joint using imaging guidance, single level | Procedure | 64493 |
124 | More than most peers in Anesthesiology |
| Injection of upper or middle spine facet joint using imaging guidance, second level | Procedure | 64491 |
86 | More than most peers in Anesthesiology |
| Injection of upper or middle spine facet joint using imaging guidance, single level | Procedure | 64490 |
86 | More than most peers in Anesthesiology |
| 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 | More than most peers in Anesthesiology |
| 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 | More than most peers in Anesthesiology |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
76 | More often than most peers in Anesthesiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related 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.
Common questions
What is Dr. Callahan's specialty?
Dr. Callahan is an anesthesiologist in Chestertown, MD. That is the designation recorded for this NPI in the federal registry, where it is listed 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. Contact the office directly to confirm availability and scheduling.
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 practicing?
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.
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