THOMAS M LARKIN M.D.
NPI 1043318587
Anesthesiology - Pain Medicine in Hagerstown, MD
NPI Status: Active since September 20, 2006
Contact Information
17 WESTERN MARYLAND PKWY
100
HAGERSTOWN, MD
ZIP 21740
Phone: (301) 797-9240
Fax: (301) 797-4234
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Male
- Years of Experience 35
- Anesthesiology
- Pain Medicine
- Accepts Medicare Approved Payment
- PECOS Enrolled
- Medicare Quality Reporting
About THOMAS LARKIN
This page provides the complete NPI Profile along with additional information for Thomas Larkin, a provider established in Hagerstown, Maryland with a medical specialization in Anesthesiology, focusing in pain medicine and more than 35 years of experience. The healthcare provider is registered in the NPI registry with number 1043318587 assigned on September 2006. The practitioner's primary taxonomy code is 207LP2900X with license number D0058327 (MD). The provider is registered as an individual and his NPI record was last updated June 2026.
- NPI
- 1043318587
- Provider Name
- THOMAS M LARKIN M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 17 WESTERN MARYLAND PKWY 100 HAGERSTOWN, MD 21740
- Location Phone
- (301) 797-9240
- Location Fax
- (301) 797-4234
- Mailing Address
- 601 MEMORY LN YORK, PA 17402
- Mailing Phone
- (717) 851-1405
- Medical School Name
- OTHER
- Graduation Year
- 1991
- Is Sole Proprietor?
- No
- Enumeration Date
- 09-20-2006
- Last Update Date
- 06-02-2026
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Anesthesiology Pain Medicine
- Taxonomy Code
- 207LP2900X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- D0058327
- License State
- MD
- Taxonomy Description
- An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207L00000X | Allopathic & Osteopathic Physicians | Anesthesiology | D0058327 (MD) |
| 2 | 207L00000X | Allopathic & Osteopathic Physicians | Anesthesiology | MD434779 (PA) |
| 3 | 207LP2900X | Allopathic & Osteopathic Physicians | Anesthesiology | MD434779 (PA) |
| 4 | 2081P2900X | Allopathic & Osteopathic Physicians | Physical Medicine & Rehabilitation | D0058327 (MD) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 412809500 | MEDICAID (05) | MD | |
| P00419972 | OTHER (01) | RR MEDICARE | |
| P00670443 | OTHER (01) | PA | RR MEDICARE |
| W2660016 | OTHER (01) | MD | BLUE SHIELD REGIONAL |
Medicare Participation & PECOS Enrollment Status
Thomas Larkin is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Thomas Larkin is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 1951338946
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20050721000220, I20120627000466
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Administration of psychological or neuropsychological test by technician, first 30 minutes
Aspiration and/or injection of fluid large joint using ultrasound guidance
Assessment of emotional or behavioral problems
Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint
Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint
Destruction of upper or middle spinal facet joint nerves using imaging guidance, each additional facet joint
Destruction of upper or middle spinal facet joint nerves using imaging guidance, single facet joint
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
Evaluation of neuropsychological test, first hour
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level
Injection of anesthetic and/or steroid drug into upper or middle spine nerve root using imaging guidance, single level
Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance
Injection of lower or sacral spine facet joint using imaging guidance, second level
Injection of lower or sacral spine facet joint using imaging guidance, single level
Injection of substance into lower spine canal using imaging guidance
Injection of substance into middle or upper spine canal using imaging guidance
Injection of upper or middle spine facet joint using imaging guidance, second level
Injection of upper or middle spine facet joint using imaging guidance, single level
Injection, methylprednisolone acetate, 80 mg
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
Testing for presence of drug, by chemistry analyzers
This procedure involves a trained technician administering a psychological or neuropsychological test. It's a process that assesses your mental function and behavior. The initial session will last 30 minutes. The aim is to understand your cognitive abilities better.
This service was performed 64 times for 45 patientsThis procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.
This service was performed 34 times for 27 patientsAssessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.
This service was performed 374 times for 142 patientsThis procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.
This service was performed 63 times for 55 patientsThis procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.
This service was performed 64 times for 56 patientsThis procedure involves the use of imaging technology to accurately target and destroy nerves in the upper or middle spinal facet joints, which may be causing pain. Each additional facet joint treated follows the same process.
This service was performed 26 times for 18 patientsThis procedure involves the use of imaging technology to guide a needle to the nerves of a single facet joint in the upper or middle spine. The nerves are then treated to alleviate pain and improve mobility.
This service was performed 24 times for 18 patientsThis is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
This service was performed 15 times for 14 patientsThis is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
This service was performed 1,086 times for 347 patientsAn evaluation of neuropsychological tests is a process to assess your brain's function. It involves tasks designed to measure cognitive abilities such as memory, attention, problem-solving, and language skills. The first hour involves initial testing and observation.
This service was performed 64 times for 45 patientsThis procedure involves injecting an anesthetic or steroid drug into the sacral spine nerve root. It's done under imaging guidance to ensure accuracy. The process can be repeated for each additional level of the spine to help manage pain or inflammation.
This service was performed 175 times for 126 patientsThis procedure involves injecting an anesthetic or steroid drug into the sacral spine nerve root. It's done under imaging guidance to ensure accuracy. The process can be repeated for each additional level of the spine to help manage pain or inflammation.
This service was performed 35 times for 30 patientsThis procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.
This service was performed 390 times for 270 patientsThis procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.
This service was performed 57 times for 49 patientsThis procedure involves injecting anesthetic or steroid medication into a specific nerve root in the upper or middle spine. It's performed using imaging technology for precise placement. The aim is to reduce inflammation and alleviate pain.
This service was performed 22 times for 18 patientsThis procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.
This service was performed 40 times for 29 patientsThis procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.
This service was performed 108 times for 79 patientsThis procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.
This service was performed 124 times for 91 patientsThis procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.
This service was performed 78 times for 51 patientsThis procedure involves injecting a substance into your middle or upper spine canal. It's performed under imaging guidance to ensure accuracy. The substance can help diagnose or treat various conditions, providing relief from symptoms.
This service was performed 68 times for 50 patientsThis procedure involves injecting medication into the upper or middle spine facet joint, a small joint in your back. This is done under imaging guidance for precision. It's a second-level procedure, meaning it's done on two separate joints. It can help reduce pain and inflammation.
This service was performed 45 times for 34 patientsThis procedure involves injecting medication into a joint in your upper or middle spine. It's performed under imaging guidance for precision. The aim is to reduce inflammation and pain. It's a single-level process, meaning one joint is treated at a time.
This service was performed 54 times for 40 patientsMethylprednisolone acetate is a strong anti-inflammatory medication. It is often given as an 80 mg injection to reduce inflammation and pain. It's commonly used for conditions like arthritis, allergic disorders, or other inflammatory diseases.
This service was performed 34 times for 26 patientsLow osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.
This service was performed 531 times for 109 patientsThis is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
This service was performed 14 times for 14 patientsThis is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
This service was performed 63 times for 63 patientsChemistry analyzers are used to detect the presence of drugs in your system. This test involves taking a small sample of your blood or urine. The sample is then analyzed for specific substances. The results help in understanding your health condition better.
This service was performed 254 times for 105 patientsQuality Reporting
The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.
| Quality Measure | Performance | Number of Patients |
|---|---|---|
| Clinical Information Reconciliation | 90% | 1244 |
| For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician performs clinical information reconciliation. The MIPS eligible clinician must implement clinical information reconciliation for the following three clinical information sets: (1) Medication. Review of the patient's medication, including the name, dosage, frequency, and route of each medication. (2) Medication allergy. Review of the patient's known medication allergies. (3) Current Problem list. Review of the patient's current and active diagnoses. | ||
| Consultation of the Prescription Drug Monitoring Program | Yes | N/A |
| Clinicians would attest to reviewing the patients’ history of controlled substance prescription using state prescription drug monitoring program (PDMP) data prior to the issuance of a Controlled Substance Schedule II (CSII) opioid prescription lasting longer than 3 days. For the transition year, clinicians would attest to 60 percent review of applicable patient’s history. For the Quality Payment Program Year 2 and future years, clinicians would attest to 75 percent review of applicable patient’s history performance. | ||
| Engagement of Patients, Family, and Caregivers in Developing a Plan of Care | Yes | N/A |
| Engage patients, family, and caregivers in developing a plan of care and prioritizing their goals for action, documented in the electronic health record (EHR) technology. | ||
| e-Prescribing | 57% | 3817 |
| At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology. | ||
| Participation in MOC Part IV | Yes | N/A |
| Participation in Maintenance of Certification (MOC) Part IV, such as the American Board of Internal Medicine (ABIM) Approved Quality Improvement (AQI) Program, National Cardiovascular Data Registry (NCDR) Clinical Quality Coach, Quality Practice Initiative Certification Program, American Board of Medical Specialties Practice Performance Improvement Module or ASA Simulation Education Network, for improving professional practice including participation in a local, regional or national outcomes registry or quality assessment program. Performance of monthly activities across practice to regularly assess performance in practice, by reviewing outcomes addressing identified areas for improvement and evaluating the results. | ||
| Patient-Specific Education | 68% | 805 |
| The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible clinician. | ||
| Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan | 99% | 238 |
| Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous twelve months of the current encounter Normal Parameters: Age 18 years and older BMI >= 18.5 and < 25 kg/m2 | ||
| Preventive Care and Screening: Screening for Depression and Follow-Up Plan | 100% | 213 |
| Percentage of patients aged 12 years and older screened for depression on the date of the encounter using an age appropriate standardized depression screening tool AND if positive, a follow-up plan is documented on the date of the positive screen | ||
| Provide 24/7 Access to MIPS Eligible Clinicians or Groups Who Have Real-Time Access to Patient's Medical Record | Yes | N/A |
| • Provide 24/7 access to MIPS eligible clinicians, groups, or care teams for advice about urgent and emergent care (e.g., MIPS eligible clinician and care team access to medical record, cross-coverage with access to medical record, or protocol-driven nurse line with access to medical record) that could include one or more of the following: • Expanded hours in evenings and weekends with access to the patient medical record (e.g., coordinate with small practices to provide alternate hour office visits and urgent care); • Use of alternatives to increase access to care team by MIPS eligible clinicians and groups, such as e-visits, phone visits, group visits, home visits and alternate locations (e.g., senior centers and assisted living centers); and/or Provision of same-day or next-day access to a consistent MIPS eligible clinician, group or care team when needed for urgent care or transition management. | ||
| Provide Patient Access | 100% | 805 |
| For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician ensures the patient's health information is available for the patient (or patient-authorized representative) to access using any application of their choice that is configured to meet the technical specifications of the Application Programing Interface (API) in the MIPS eligible clinician's certified EHR technology. | ||
| Secure Messaging | 62% | 805 |
| For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in response to a secure message sent by the patient (or the patient-authorized representative). | ||
| Security Risk Analysis | Yes | N/A |
| Conduct or review a security risk analysis in accordance with the requirements in 45 CFR 164.308(a)(1), including addressing the security (to include encryption) of ePHI data created or maintained by certified EHR technology in accordance with requirements in 45 CFR164.312(a)(2)(iv) and 45 CFR 164.306(d)(3), and implement security updates as necessary and correct identified security deficiencies as part of the MIPS eligible clinician's risk management process. | ||
| Send a Summary of Care | 97% | 149 |
| For at least one transition of care or referral, the MIPS eligible clinician that transitions or refers their patient to another setting of care or health care provider-(1) creates a summary of care record using certified EHR technology; and (2) electronically exchanges the summary of care record. | ||
| Use evidence-based decision aids to support shared decision-making. | Yes | N/A |
| Use evidence-based decision aids to support shared decision-making. | ||
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1043318587, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
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HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
HAGERSTOWN, MD 21740
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1043318587, enumerated as an "individual" on September 20, 2006.
The provider is located at 17 WESTERN MARYLAND PKWY 100 HAGERSTOWN, MD 21740 and the phone number is (301) 797-9240.
Anesthesiology with taxonomy code 207LP2900X and a focus in Pain Medicine.
The provider might be accepting Accepts: Medicare, Medicaid, Railroad Medicare and Blue. Please consult your insurance carrier or call the provider to verify.
