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Edit this profileAt a glance
- 3700 California St, San Francisco, CA 94118
About Dr. Halsey
Based in San Francisco, CA, William T. Halsey, MD is listed in the NPI registry under anesthesiology. William is also listed as specializing in anesthesiology — pain medicine. Medicare claims data shows William provided 105 services to 85 patients. The services billed most often include anesthesia for other procedure on lower spine, anesthesia for other procedure on upper spine, and anesthesia for closed procedure on pubic bone or pelvic joint. NPI 1295775237 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
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
- (415) 719-0000
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
3700 CALIFORNIA ST
San Francisco, CA 94118
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
Sedation & Phobias
Anesthesia complications
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
Facial & jaw pain
General pain
Head & facial pain
Headaches
Joint pain
Mental health
Muscle pain
Musculoskeletal 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
Post-surgery recovery
Sedation & anesthesia
Spine pain
Procedures & services
Nerve blocks
- Celiac Plexus Nerve Block
- Abdominal Nerve Block
- Ganglion impar block
- Groin nerve block
- Pudendal nerve block
- Superior hypogastric plexus block
Nerve Blocks
Pain Relief Procedures
Regional anesthesia
Sedation
- In-Office Anesthesia for Plastic Surgery
- Pediatric Dental Sedation
- Sedation for Colonoscopy and Endoscopy
- Sedation for Egg Retrieval
- Sedation for MRI
- Sedation for Vasectomy
- IV sedation for endoscopy
Sedation & anesthesia
- General anesthesia
- Moderate dental sedation
- Sedation for dental work
- Labor epidural
- Pre-surgery anesthesia consult
- Spinal spinal block
Specialized Care
Vascular Access
Ablation
Head & facial procedures
Implants & devices
- Pain pump implant
- Pain pump refill and check
- Peripheral nerve stimulator implant
- Spinal cord stimulator implant
- Spinal cord stimulator trial
Infusion therapies
Infusion therapy
Joint injections
Muscle injections
Nerve injections
- Celiac plexus block
- Lumbar sympathetic block
- Nerve block
- Rib nerve block
- Shoulder nerve block
- Stellate ganglion block
Nerve procedures
Pain relief procedures
Spine injections
- Epidural steroid injection
- Facet joint injection
- Medial branch block
- Sacroiliac joint injection
- Tailbone epidural injection
Spine procedures
Procedures Most Often Billed to Medicare
105 services · 85 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Anesthesia for other procedure on lower spine | Anaesthesia | 00630 |
56 | More than most peers in Anesthesiology |
| Anesthesia for other procedure on upper spine | Anaesthesia | 00600 |
29 | Too few peers to compare |
| Anesthesia for closed procedure on pubic bone or pelvic joint | Anaesthesia | 01160 |
20 | As often as other 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.
Other anesthesiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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.
More connections — 13 related providers in 2 groups
Other anesthesiologists in San Francisco 5
Same specialty, same city.
Also performs Anesthesia for other procedure on lower spine 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Halsey's specialty?
Dr. Halsey is an anesthesiologist in San Francisco, CA. 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. Halsey?
Dr. Halsey is listed at 3700 California St, San Francisco, CA 94118. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Halsey?
The number on file is (415) 719-0000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Halsey?
Dr. Halsey's National Provider Identifier is 1295775237. 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
How much experience does Dr. Halsey have?
Dr. Halsey has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What is Dr. Halsey known for?
According to Medicare billing data, Dr. Halsey provides treatments such as anesthesia for other procedure on lower spine and anesthesia for other procedure on upper spine. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Halsey's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Halsey. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.