Expert Pain Care With a Personal Touch You'll Notice

American Pain Institute offers the full range of pain treatments, from joint and spinal injections to radiofrequency ablation and regenerative medicine solutions, all with the personal attention only a private practice can provide. We'll take the time to understand your pain and build a plan that works for your life.

Find Out What's Really Causing Your Pain

You've probably been told to rest, stretch, or take something and wait. When that hasn't worked, it's time for a closer look. Dr. Greenspan studies your records and imaging before you ever sit down, so your first appointment starts with answers instead of paperwork.

• 1Chronic back and neck pain
• 2Joint pain and arthritis, including rheumatoid arthritis
• 3Sciatica and nerve pain
• 4Severe pain that hasn't responded to other care

What Sets American Pain Institute Apart

At larger pain management centers, you might see a different provider every time and repeat your story from scratch. Not here. American Pain Institute is a private practice built around one relationship: yours with Dr. Greenspan.

• The Same Doctor Every Visit

  Dr. Greenspan handles your care personally from day one. He knows your history because he's the one who took it.

• Comprehensive Pain Treatments

  From spinal injections and radiofrequency ablation to spinal cord stimulation and regenerative medicine, we offer a full range of pain treatments in one convenient location.

• 32 Years of Experience

  Three decades of practicing medicine, including 13 years treating pain patients right here in Portsmouth.

• How New Patients Get Scheduled

  We are referral-only. Submit your referral, medical records, and any imaging such as MRI or X-rays. Most patients are scheduled within two weeks, with urgent appointments accommodated when available.

Getting Started Is Easier Than You Think

From chronic back pain and neck pain to herniated discs, nerve damage, arthritis, fibromyalgia, and headaches. American Pain Institute offers personalized, non-surgical pain management treatments for a broad range of conditions. We also provide regenerative medicine solutions for patients seeking alternatives to traditional care.

Getting started requires just two things:

• Get a Referral

  Ask your primary care or treating provider for a referral. We require one for every patient, even if your insurance doesn't.

• Send Your Records

  Forward records for your pain condition along with any MRI or X-ray imaging. Once reviewed, most patients are seen within two weeks.

Latest Articles

The Numbers Behind Your Care

Behind every treatment plan is a track record built over years. Before you trust someone with your pain, you deserve to know who you're walking in to see.

Comprehensive Pain Care for a Wide Range of Conditions

At American Pain Institute, every treatment plan is built specifically for the patient in front of us. Using a non-surgical, interventional approach, we focus on identifying and treating the underlying cause of your pain — with the goal of sustainable, long-term relief that improves your daily quality of life.

• Chronic back pain, neck pain & spinal stenosis
• Sciatica, nerve damage & neuropathic pain
• Joint pain, arthritis & herniated discs
• Fibromyalgia, headaches & cancer-related pain

We Work With You No Matter What

We believe cost should never be a barrier to getting the care you need. Our team works with most major insurance plans, and for treatments not covered by insurance such as regenerative medicine we are proud to offer the lowest cash prices for any procedure

Whether your care is covered by insurance or paid out of pocket, you'll receive the same exceptional, personalized care. Our cash-pay options make treatments like injections and other non-surgical pain relief therapies accessible to every patient who walks through our doors.

Hear It From the People We've Helped

We can tell you about our care all day. Our patients say it better. Hear from the people who found relief and what that relief has meant for their everyday lives.

Monday–Thursday: 7:30am – 4:00pm
Friday–Sunday: Closed

Referral required to become a patient.
Most patients seen within two weeks.