The Three Models of Pharmacist Prescribing
Pharmacist prescribing authority in the U.S. falls into three distinct legal models, and knowing which model your state uses is essential for MPJE success:
Model 1: Collaborative Drug Therapy Management (CDTM)
The most common model. A pharmacist and physician (or other authorized prescriber) enter into a written Collaborative Practice Agreement (CPA) that authorizes the pharmacist to initiate, modify, or discontinue drug therapy for a defined patient population under specific protocols. The physician retains oversight responsibility. The CPA must be specific about which drugs and conditions are covered, monitoring requirements, and documentation obligations.
Model 2: Independent Prescriptive Authority
A smaller number of states grant pharmacists independent prescriptive authority for specific drug classes without requiring physician oversight or a CPA. New Mexico was the first state to grant broad independent prescribing authority to pharmacists. California, Oregon, Colorado, and others have since followed for specific drug categories including hormonal contraceptives, naloxone, nicotine replacement, and HIV prevention medications.
Model 3: Statewide Standing Orders
For specific public health interventions — particularly naloxone and immunizations — many states authorize a statewide standing order issued by the State Health Officer or Board of Pharmacy. This allows pharmacists to dispense or administer these products to any eligible patient without an individual prescription. Know whether your state uses standing orders or requires individual prescriptions for naloxone.
Drug Categories Most Commonly Covered by Pharmacist Prescribing Authority
The following drug categories are the most frequently authorized for pharmacist prescribing and the most tested on the MPJE:
- Naloxone/naltrexone (opioid overdose reversal): All 50 states + DC have some form of naloxone access law. Most use statewide standing orders. Key exam question: Does your state require an individual prescription or allow standing order dispensing? What are the immunity provisions?
- Hormonal contraceptives: Oral contraceptives, patches, rings, injectables. About 20+ states now authorize pharmacist prescribing. Key exam topics: mandatory screening requirements (blood pressure, contraindication screening), counseling obligations, mandatory referral criteria, and whether a CPA is required.
- Immunizations: Pharmacists in all 50 states can administer vaccines. The specific vaccines authorized, age requirements, and whether a prescription is required varies by state. Most states now allow pharmacists to administer any CDC-recommended vaccine under a standing order or protocol.
- HIV PrEP/PEP: California authorizes pharmacist-initiated PrEP and PEP. Other states are considering or have enacted similar authority. Know your state's HIV prevention prescribing rules.
- Tobacco cessation products: Several states authorize pharmacist prescribing of prescription-strength nicotine replacement therapies and varenicline under CPA or independent authority.
- Travel medications: Some states allow pharmacists to prescribe certain travel-related medications (altitude sickness, traveler's diarrhea, malaria prophylaxis) under protocol or CPA.
- Opioid use disorder treatment (buprenorphine): Since the 2023 elimination of the DATA 2000 waiver requirement, any DEA-registered practitioner can prescribe buprenorphine for OUD. Some states are exploring pharmacist authority to initiate buprenorphine therapy under CPA.
What the MPJE Tests on Pharmacist Prescribing
MPJE questions on prescribing authority typically test your ability to identify whether a specific pharmacist action is legally authorized in your state. Common question formats include:
- Scenario: A patient requests oral contraceptives. The pharmacist performs a blood pressure check and reviews contraindications. Is this pharmacist authorized to dispense in [your state]? What documentation is required?
- Scenario: A patient presents requesting naloxone for a family member. No prescription is provided. Can the pharmacist dispense? What law applies?
- Scenario: A pharmacist modifies a patient's metformin dose based on a new creatinine clearance value under a CPA with a physician. Is this within the CPA's authorized scope?
- Know the difference between a CPA and a standing order — and which one applies to which drug classes in your state.
- Know what happens if a pharmacist acts outside the scope of a CPA — this constitutes practicing medicine without a license, a serious legal violation.
📌 MPJE Key Principle
When in doubt on prescribing authority questions: if there is no explicit state law authorization and no valid CPA, the pharmacist cannot initiate drug therapy. Pharmacists operating outside their authorized scope face disciplinary action by the state board.